Efficient use of search engines
1) intitle
The purpose of this search command is to tell the search engine that the title must contain the keywords you enter.
Otherwise, sometimes your search page will include the keywords you have entered.
2) keyword A-keyword B
The purpose of this search instruction is to tell the search engine that the search results cannot contain the keyword B. when using this instruction, the keyword A must be followed by a space.
3) filetype: keywords for file format
The purpose of this search instruction is to tell the search engine that the results only show links with keywords in a certain file format.
4) site: Web site
The purpose of this search instruction is to tell the search engine to search for the keyword only on this site.
