Google Guide: Using Search Operators (Advanced Operators) Using Search Operators (Advanced Operators)
Skip to Part II: Understanding Search Result unless you're an experienced Google user or you want to know how to use Google's advanced operators.
You can specify most of the Advanced Search page options in a regular search box query by using advanced operators, i.e., query words that have special meaning to Google. Since the advanced operators are convenient for searching, Google Guide calls them "search operators." Most users find that making use of the Advanced Search page, instead of using search operators directly, fulfills their specialized search needs. Search operators tend to be used by people who prefer to type commands rather than filling in forms.
Want to see examples of search operators? Fill in ... advancedoperatorsqueriessearch By tickingawayin stillSurfingwith advancedoperatorspartresultsearchskipstillsurfingunderstandingby 13 users