1, expand the search scope.
You can try to expand the scope of search words, including synonyms, synonyms, related words and so on. If you can't get enough results with one database, you can try to search with other databases. Different databases have different data sources and contents, which may provide different results.
2. Add a search entry.
In addition to keywords, you can try to add other search terms, such as author, organization, time, etc. , so as to search from more angles. If the retrieval results are too concentrated in a certain time period, you can try to use different time periods for retrieval in order to capture more relevant information.
Step 3 Use word breakers
Word breakers can be used to match different forms of words such as "*" and "?" In order to match more relevant results in the retrieval process. If the original search term is in a single language, you can try to use keywords or phrases in other languages to capture more relevant information.
4. Use professional databases
If you use a general search engine, you can try to use professional databases for retrieval, such as academic databases and industry databases, in order to obtain relevant information more accurately. Using a special database can obtain information resources in a specific field more accurately, but you need to choose a suitable database according to your own needs and understand its characteristics and usage.
Common professional databases and their characteristics;
1, academic database
Academic database is a database for storing academic papers, research reports, books and other academic resources, such as CNKI, Wanfang and VIP. These databases cover many disciplines and provide rich academic information. The use of academic database can obtain academic research results more accurately and understand the frontier trends of the industry.
2. Industry database
Industry database is a database that stores information of specific industries, such as industry reports, market analysis, enterprise information, etc. These databases usually cover the latest trends, market size, competition pattern and other information of an industry or field. The use of industry database can help us understand the trends and development trends of specific industries more accurately.
3. Patent database
Patent database is a database for storing patent information, such as CNIPR and DWPI. These databases provide a wealth of patent information, including technical solutions, inventors, patentees and so on. Using the patent database, we can know the latest technological innovation and get the patent search results.