No matter how powerful the search engine is, it can't find the content that is not available on the Internet. Moreover, although some content exists on the Internet, it has slipped through the net for various reasons. So before you use a search engine, you should take a few seconds to think about it. Is it possible to buy what I am looking for online? If so, where is it? What is it like? What keywords will be included in the web page?
There are some things you don't need to bother with search engines at all. For example, if you are looking for a company phone number, the speed of calling 1 14 is probably much faster than that of a search engine. There are still some problems that may be difficult to describe with appropriate keywords, or search engines cannot find them directly. Then you can try to find a friend who is proficient in this problem, or find a popular forum in this area to ask, which is also a search method. Sometimes, the best search method you can choose is to give up the internet and go to the nearby library, where there are tons of "information" that can't be found online. When you confirm that the information you are looking for is suitable for online search through search engines, the probability of finding satisfactory results is much greater.
The characteristics of various search engines are completely different. If you don't choose the right search tool every time, you will waste a lot of time. Should this search use Sina or Sohu? Google or Baidu? Analyze your needs, compare the advantages and disadvantages of different search engines, and then choose the best search tool for this search.
Learn to search with two keywords.
If a stranger suddenly approached you and asked you "Beijing", what would you say? Most people will feel puzzled and then ask what this person really wants to ask about "Beijing". Similarly, if you enter the keyword "Beijing" in a search engine, the search engine does not know what you are looking for, and may return many inexplicable results. So you should get into the habit of searching with multiple keywords. Of course, in most cases, it is enough to use two keywords, which are separated by spaces.
For example, if you want to know the information about Beijing tourism, you can enter "Beijing tourism" to get the relevant information about Beijing tourism; If you want to know the relevant information of Beijing temporary residence permit, you can enter the "Beijing temporary residence permit" search; If you want to download an MP3 named "xxxx", enter "xxxx Download" to search.
Learn to use the minus sign "-"
The function of "-"is to remove irrelevant search results and improve the relevance of search results. Sometimes, you see some desired results in search results, but you also find many irrelevant search results. At this time, you can find out the characteristic keywords that have nothing to do with the results and then subtract them.
For example, if you are looking for the enterprise information of "Shenhua", you can find a lot of news about Shenhua team playing football by typing "Shenhua". After finding that the same feature of these news is "football", you can enter "Shenhua-football" to search, and there will be no more sports news to bother you.
Think twice before clicking on the search results.
A successful search consists of two parts: correct search keywords and useful search results. Before you click on any search results, a quick analysis of the title, website address and search results summary will help you choose more accurate results and save you a lot of time. Of course, what you need depends on what you are looking for. Evaluating the quality and authority of online content is an important step in search.
A successful search usually consists of several searches. If you are not familiar with what you want to search for, even search experts can't guarantee that you can find what you want in the first time. Search experts will test with simple keywords first. They won't be busy looking at all the search results carefully. Instead, they will first look for more information from the search results page, and then design a better keyword to search again. After repeated many times, they can design great search keywords and search for satisfactory search results.
Be good at correcting mistakes
It often happens that you seem to have tried your best to find it, but you still haven't found the answer you need. At this time, please don't give up, carefully review and check your search process, perhaps just because of a small mistake. A seemingly hopeless search is likely to succeed after you re-examine your search strategy.
Here are five low-level mistakes that beginners easily make when searching and their solutions. It is precisely because you often make these mistakes that you always get useless, absurd or completely meaningless search results. Once you realize these mistakes, it is easy to expel these children from your search experience forever.
Common error 1: Typing error.
A common mistake is that the keywords you enter contain typos. According to the author's statistics, there are often a lot of wrong searches. There are six search methods in Nicholas Tse alone: Nicholas Tse, Nicholas Tse, Nicholas Tse, Nicholas Tse, Nicholas Tse and Nicholas Tse. What other keywords are there, such as "Star Wars" and "Governing the country by virtue"? Can you find any useful information with such keywords? So whenever you think there should be a lot of content on the internet, but you can't find the results, you should first check whether there are typos.
Common mistake 2: keywords are too common
Search engines have defects in searching for common words, because these words are so exposed that they appear in millions of web pages and can't actually be used to help you find anything useful. For example, when searching for "telephone", there are countless websites that provide information related to "telephone", from online yellow pages to telephone retailers to personal telephone numbers. So when the search results are too many and messy, you should use keywords or minus signs as much as possible instead of using too general words. Designing a special search keyword like "Shanghai common telephone" will give you really useful results. Of course, if you are looking for a bunch of car websites or a bunch of MP3 websites, then searching with "cars" and "MP3" is correct.
Common mistake 3: polysemous words
Beware of ambiguous words, such as searching for "Java". Is the information you are looking for an island in the Pacific Ocean, a famous coffee or a computer language? Search engines cannot understand and distinguish polysemous words. The best solution is to ask yourself this question before searching, and then use phrases, multiple keywords or other words instead of polysemous words as search keywords. For example, searching with "Java Indonesia", "Java Coffee" and "Java Language" can meet different needs.
Common mistake 4: Don't throw keywords, throw them if you want.
Another common reason for search failure is similar search: lyrics of modern love stories, distribution of information morning newspapers in Jinan, various kinds of Lingyang cars, and train schedules from Shanghai to Chengdu. Netizens mistakenly think that search engines are obedient waiters. In fact, search engines are very mechanical. When you search with a keyword, it will only find the page that contains this keyword, regardless of the content on the page.
The problem is that no web page will contain keywords such as "lyrics of modern love stories" and "train schedule from Shanghai to Chengdu", so search engines can't find such a web page. But the web page that really contains the content you are looking for should contain keywords such as modern love story, lyrics, Shanghai, Chengdu, trains and timetables, so you should search like this: lyrics of modern love story, information morning post published in Jinan, bell sheep car pattern, Shanghai Chengdu train timetable.
Do you understand? Don't search in your mind When there are few or no search results, you should enter simpler keywords to search, guess the possible keywords in the web page you are looking for, and then search with those keywords.
Search keyword refining
The principle of choosing search keywords is to first determine what you want to achieve and form a clear concept in your mind, that is, what am I looking for? Is this an informative document? Or a product or service? Then analyze the characteristics of these messages and the differences with other similar messages, and finally extract the most representative keywords from these directional concepts. If this step is done well, you can often locate what you are looking for quickly, and most of the time you don't need to use other more complicated search techniques at all.
Refine search criteria
The more specific the search conditions you give, the more accurate the results returned by the search engine. For example, if you want to find information about computer adventure games, it is useless to enter game. The scope of computer games is smaller. Of course, it is best to input computer adventure games, and the returned results will be much more accurate. In addition, some functional words and common nouns are not supported, such as "He", "How", "What", "web" and "Home Page" in English, and "De", "Di" and "He" in Chinese. These words are called stop words or filter words and will be ignored by search engines when searching.
Make full use of search logic commands
Search engines basically support additional logical commAND queries, such as "+"and "-",or the corresponding Boolean logical commands and, or and NOT. Using these command symbols well can greatly improve our search accuracy.
Exact matching search
In addition to using the above logical commands to narrow the query scope, you can also use ""quotation marks (note that English characters. Although some search engines now support Chinese punctuation marks, considering other engines, it is best to get into the habit of using English characters for accurate matching query (also called phrase search).
Special search command
Title Search Most search engines support searching for web page titles, and the command is "title:". When searching for titles, the aforementioned logical symbols and exact matching principles are equally applicable. Website search In addition, we can also search websites with commands such as "site: (Google)", "host: (Altavista)", "URL:“(Infoseek) or" domain: (hotbot) ". Link Search In Google and AltaVista, users can find the inbound link of a website through the "link:" command. Some other engines have the same function, but the command format is slightly different. You can use this command to see who and how many websites are linked to you.
1, simple query
Enter keywords in the search engine, and then click "Search", and the system will return the query results soon. This is the simplest query method, which is convenient to use, but the query result is inaccurate and may contain a lot of useless information.
2. Use double quotation marks ("")
Adding double quotation marks (half-width, as well as other symbols to be added below) to the keyword to be queried can realize accurate query. This method requires accurate matching of query results and excludes evolutionary forms. For example, if you type "telex" in the text box of a search engine, it will return the website with the keyword "telex" in the webpage, instead of returning the webpage such as "telephone fax".
3. Use the plus sign (+)
Using a plus sign before a keyword is equivalent to telling the search engine that the word must appear on the web page of the search results. For example, entering "+computer+phone+fax" in a search engine means that the content to be searched must contain three keywords: "computer, phone and fax".
Step 4 Use the minus sign (-)
Using a minus sign in front of a keyword means that the keyword cannot appear in the query results. For example, if you enter "TV Station-CCTV" in the search engine, it means that "CCTV" must not be included in the final query results.
5. Use wildcards (* and? )
Wildcards include an asterisk (*) and a question mark (? ), the former means that the number of matches is not limited, and the latter means that the number of matched characters is limited, which is mainly used in English search engines. For example, if you enter "computer*", you can find words such as "computer, computers, computerized, computerized" and enter "comp? Ter ",you can only find words like" comparator, comparator, competitor ".
6. Use Boolean retrieval
The so-called Boolean retrieval refers to a query method that expresses the logical relationship between keywords through standard Boolean logical relationship. This query method allows us to input multiple keywords, and the relationship between each keyword can be expressed by logical relational words. And, called logical and, is connected by AND, which means that the two words it connects must appear in the query results at the same time. For example, entering "computer and book" requires that both computers and books must be included in the query results. Or, called logical OR, means that either of the two linked keywords can appear in the query results. For example, if you enter "computer or book", you can only ask for the computer, or only the book, or both the computer and the book in the query results. Not, called "not" logically, means that among the two connected keywords, the second keyword should be excluded from the concept of the first keyword. For example, if you enter "cars instead of cars", you need to include cars in the query results, but not cars at the same time. Near means that the word spacing between two keywords cannot exceed n words. In the actual use process, we can use all kinds of logical relations comprehensively and flexibly to make more complicated queries.
7. Use parentheses
When two keywords are connected by another operator and you want to list them as a group, you can put parentheses around the two words.
8, using meta-word retrieval
Most search engines support the function of "meta-words". According to this function, users can put meta-words in front of keywords, so that they can tell search engines what specific features you want to retrieve. For example, if you enter "Title: Tsinghua University" in a search engine, you can find a page with Tsinghua University in the title. Add "domainrg" after the typed keywords, and you can find all websites with org suffix. Other metacharacters include: image: for retrieving pictures, link: for retrieving pages linked to the selected website, and URL: for retrieving pages with a certain keyword in the address.
9. Case-sensitive
This is a problem that should be paid attention to when retrieving English information. Many English search engines allow users to choose whether case-sensitive keywords are needed, which is very helpful for querying proper nouns. For example, the web refers to the World Wide Web or the World Wide Web, and the Web refers to the spider web.
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