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Combine terms with Boolean Operators

Boolean operators allow terms to be combined with logic operators. The following operators are allowed: AND, +, OR and NOT, hyphen (-) is not in use.

Note: Boolean operators must be ALL CAPS

AND

The AND operator is the default conjunction operator. This means that if there is no Boolean operator between two terms, the AND operator is used. The AND operator matches records where both terms exist anywhere in the field of a record.

To search for records that contain "economics" and "Keynes" use the query:

economics Keynes

or

economics AND Keynes

+

The "+" or required operator requires that the term after the "+" symbol exist somewhere in the field of a record.

To search for records that must contain "economics" and may contain "Keynes" use the query:

+economics Keynes

OR

The OR operator links two terms and finds a matching record if either of the terms exist in a record.

To search for documents that contain either "economics" or "Keynes" or both terms use the query:

economics OR Keynes

NOT

The NOT operator excludes records that contain the term after NOT. To search for documents that contain "economics" but not "Keynes" use the query:

economics NOT Keynes