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Advanced Search, which is accessed under Simple Search, is the ideal tool for constructing searches that employ search fields and Boolean logic in addition to words and phrases.  Advanced Search is comprised of two screens; the first provides convenient tools for precise content selection, while the second screen displays an array of tools for search construction, including a drop down menu of search fields and two options to limit by date.  Select Search Operators from the form, or manually type them in as required. Select a question mark next to any feature on the Advanced Search form for instant help with that feature.