Use Boolean search operators and modifiers to target your search query and to find the results you need faster. For example, a referenc...

The and operator returns any combination of the terms' plurals, synonyms, or alternate spellings. Example: The query flavor and aroma r...

The not operator excludes any combination of the terms' plurals, synonyms, or alternate spellings. Example: The query flavor not dye re...

Most often used with within parentheses in Boolean expressions, the or operator is technically interpreted as at least one term/phrase/...

Enclosing terms within quotation marks creates a bound phrase, which means that: Term(s) must appear side-by-side as they do within th...

Enclosing terms and a Boolean operator within parentheses creates a Boolean expression that functions as a single unit/condition that c...

When entering your search query, the following Greek letters and their equivalents will match and return results. Notes: Entering an e...

You may search references using the asterisk (* - match 0 or more characters) and question mark (? - match 0 or 1 character) wildcard c...