I think the more effective way is to find some foreign websites in the search results by searching different keywords, such as China Manufacturing Network, HC Network and Alibaba, and then go to that website to find your target customers abroad, Google &；; Yahoo is just a springboard for you at this time. Through this tool, you can find the information published by those customers in your country and their websites. You can search any information on Google, such as phone number, email address, company abbreviation, mobile phone, products, etc. Everything can be searched on Google and Yahoo.
I wish you find more customers!