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OPERATOR EXAMPLE	FINDS PAGES CONTAINING...	Example
enzyme genome	The words enzyme and genome
enzyme OR genome	Either the word enzyme or the word genome. The word "OR" must be uppercase
genome	Either the word enzyme or the word genome. The "|" symbol does not need to be separated by spaces from adjacent words.
enzyme -genome	The word enzyme but NOT the word genome
+enzyme	Only the word enzyme, and not the plural or any tenses or synonyms
biology ~lab	biology info for both the word lab and its synonyms: lab, laboratory, etc.
define:genome	Definitions of the word genome from around the Web.
red * green	The words red and green separated by one or more words.
filetype:pdf	Find documents of the specified type
ext:pdf	Find documents of the specified extension
allintext:restriction enzyme	All query words must appear the in text of the page.
intext:restriction enzyme	The term "restriction" must appear in the text of the page.
allintitle:restriction enzyme	All query words must appear the in title of the page.
intitle:restriction enzyme	The term "restriction" must appear in the title of the page.
base-pair	all forms of the term, whether spelled as a single word, a phrase, or hyphenated
1..5	Specify that results contain numbers in a range by specifying two numbers, separated by two periods, with no spaces