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NARROWING
your search: AND
AND narrows a search. You get fewer records, because both
concepts must be present in the records found--see the tiny area in
blue. Use AND to combine
different concepts in one search.
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BROADENING your search: OR
OR broadens a search. You get more records because OR includes each of the concepts
separately, as well as both concepts when found together. OR is often used to link together related
concepts.
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