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Nested queries

Nested queries are built using parentheses. This type of search is useful if you want to combine search terms and words in your own predefined search strategy. It is also a practical way to search for synonyms in a search term (see examples). Nested queries can be used in both Smart search and Advanced search.

If you want to nest query terms within other query terms, you must use parentheses to specify the order in which the search terms and operators should be interpreted.

The following rules apply to the use of parentheses:

- Parentheses can be used to specify the order in which the search terms and operators should be interpreted.

- Information within parentheses is read first, and then information outside parentheses is read next.

- If there are nested parentheses, the search engine processes the innermost parenthetical expression first, then the next, and so on, until the entire query has been interpreted.

Examples:

- (mouse or rat) and trap

- ((mouse or rat) and trap) or mousetrap