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Boolean Operators

The Boolean operators and, or, and not can be applied to search terms.

AND (also + or &)

Use AND to search for documents containing two or more terms. For example, the following query returns documents containing both cat and dog:

cat AND dog

The AND operator is applied by default; for example cat AND dog produces the same results as cat dog.

OR

Use OR to search for documents containing at least one of two or more terms. For example, the following query returns documents containing cat, documents containing dog, and documents containing cat and dog:

cat OR dog

NOT

Use NOT to search for documents that do not contain a given term. For example, the following query returns documents containing cat but not containing dog:

cat NOT dog