The following table lists the search operators that work with each Google search service. Click on an operator to jump to its description — or, to read about all of the operators, simply scroll down and read all of this page.
...Each entry typically includes the syntax, the capabilities, and an example. Some of the search operators won’t work as intended if you put a space between the colon (:) and the subsequent query word. If you don’t care to check which search operators require no space after the colon, always place the keyword immediately next to the colon. Many search operators can appear anywhere in your query. In our examples, we place the search operator as far to the right as possible. We do this because the Advanced Search form writes queries in this way. Also, such a convention makes it clearer as to which operators are associated with which terms.