This document discusses Google search operators, which are special query words that have meaning to Google's search engine. It provides examples of 22 different search operators including allinanchor, allintext, allintitle, define, ext, filetype, group, id, inanchor, insubject, intext, intitle, inurl, link, location, related, site, source, weather, and others. It explains what each operator does and provides examples of queries using each operator to modify and filter search results. The document also discusses how to carefully combine multiple operators in a single query.