At its simplest, a query can be just a word or a phrase. But with the tips on this page, you can expand the focus of your query to give you more complete results.

• The search tool matches the words in your query to the words in its index. It returns results that contain at least one occurrence of every word or quoted phrase you typed. Note that search automatically filters out common words like "a," "and," "the," "these," and so forth.
• The search also supports the standard Boolean operators and syntax: AND; OR; AND NOT; and related precedence operators such as "".