Advanced keyword searching uses three connectors:
AND -restricts results; says each keyword MUST be present in each record
OR -expands results; says keyword OR synonym(s) are in each record
NOT -excludes keywords; says keyword(s) must NOT be in each record
This logic allows for detailed search strategies that may involve many keywords (synonyms)!
Keyword OR Synonym OR Synonym
AND
Keyword OR Synonym OR Synonym
AND
Keyword OR Synonym OR Synonym