The text search engine allows queries to be formed from Boolean expressions containing the
operators AND, AND NOT, OR, and NEAR, and
grouped with parentheses. The wildcard character asterisk (*) is used to
represent the variable component of a word or phrase. If a phrase
contains blank spaces or the wildcard character asterisk (*), it must be
enclosed in double quotes. For example:
"materials processing"
finds documents containing the phrase
materials processing
materials or processing
finds documents containing materials
or processing
materials and processing
finds documents containing both materials and
processing
materials and not processing
finds documents containing materials but not
processing
materials near processing
finds documents where materials and
processing are close to each other
(polymer and not "materials processing") and
biological
finds documents containing biological, plus
polymer but
not materials processing
"bio*"
finds documents containing words starting with
bio
