Wildcards

The following wildcard characters can be included in keyword searches in the Quick Search box and on the Advanced Search page.

Wildcard operator	How it works	Example	Result
* (zero or more characters wildcard)	Replace zero or more characters within or at the end of the search string.	nitr*	Returns records containing the words nitride, nitrile, nitrate, nitriding, Nitronic, nitrogen
? (single character wildcard)	Replace a single character within or at the end of the search string.	metalli?	Returns records containing the word metallic but not metal or metals