Boolean search is named after the work of British mathematician George Boole. In the theory of mathematics by George Boole, all the variables are either “true” or “false.”
The Boolean theory uses three main operators (AND, OR, and NOT) to organize and deliver relevant results to the users for the Google search.
There are only five elements of syntax in the Boolean search operators: Site:gov inurl: blog Site:gov “blog” “comments” Site:gov “forums”