(1) “-” syntax, minus sign syntax
Google uses the minus sign to represent the “not” operation, “AB” means searching for web pages that contain A but not B. When searching for foreign customers, you don’t want to get information about domestic manufacturers, so you can use this syntax to exclude information about some domestic manufacturers. For example, the search result of “product name – factory manufacturer” excludes information about some factories. At least you can exclude some information and reduce the workload. But before that, you must summarize the characteristics of the information you don’t want to find. You must have basic inductive ability.
(2) “OR” syntax, uppercase OR syntax
Google uses OR to represent the logical “or” operation, “AORB”, which means that there is A or B or both A and B on the web page. This syntax is different from A space B. The latter means both A and B. The former obtains more information. This syntax is also used to reduce the workload, without the need to use three (A, B, AB) keywords to search separately.
(3) inurl/allinurl syntax
The inurl syntax gets the result that the first keyword is included in the link of the web page, and the following keywords appear in the link or web document. The complete URL of Iran’s forward letter of credit agent is as follows: www.5ihhxx.com/2011/02/专业伊蘭外汇信信代理，伊蘭往期信信代理.html. Of course, the link you actually copied and pasted is not like this. There is a conversion process in the middle, but the more important keywords actually appear in the URL. In this way, in the process of foreign trade, searching for keywords in the URL can improve accuracy and reduce workload.
There cannot be a space after inurl, and Google does not search for URL symbols. The result obtained by the so-called allinurl syntax is that all keywords are displayed in the URL.
(4) intitle/allintitle syntax
This syntax is similar to the above syntax. What needs to be solved is to understand the meaning of Title. “<title>Foreign Trade Learning Blog</title>” is the title of this blog. Now many companies have long homepage titles. In addition to the name of the website, there is also information about the main products. This is mainly set up to obtain a better ranking in search engine results. It can be seen that websites with keywords in the title are definitely highly relevant websites. Using this method to search for foreign customers can save a lot of time, but the information found by this method is likely to be domestic manufacturers. However, for foreign trade companies, there is no harm. You must also pay attention to the information of domestic factories, and by the way, you can understand the situation of competitors or suppliers.
The usage of intitle/allintitle can refer to inurl/allinurl.