These words are known as Boolean Operators.
*Note: OR should be used for synonymous concepts. For example: children OR kids OR youth
*Note: Use NEAR/x. x = number of words between search terms.
For example: measles NEAR/4 outbreak will return results where "measles" and "outbreak" are no more than 4 words away from one another.
Wildcards are symbols you can use to represent letters to return more complete search results. They can be used at the beginning (left-hand truncation), middle or end (right-hand truncation) of a word in the Topic and Title fields and at the end of a search in the Author field.
Examples: *ball would find "beachball" "volleyball" "basketball" s*food would find "seafood" and "soyfood"; muse* would find "muses" "mused" and "museum"; a search for John* could find "John", "Johns", "Johnson", "Johnsons"
Note: When using left or right-hand truncation you must enter at least three characters. So, *bio is a valid search, but *bi is not.
Note: When used in author searches, you must enter at least two letters before the wildcard.
Examples: wom?n would find "woman" and "women"
Examples: grain$ would find "grain" and "grains"; colo$r would find "color" and "colour"
Note: You can not use the $ when searching in quotations