Wildcards are special characters used in searches to represent unknown or variable characters. They help broaden your search and find variations of terms, including plurals and different spellings. Wildcards are useful for improving your search efficiency by discovering resources that do not match exact-terms, as well as saving you time from performing multiple similar searches.
The most common wildcards are
* (asterisk): represents any number of characters that come after where the asterisk is applied
For example searching for 'librar*' will retrieve results containing the words 'library,' 'libraries,' 'librarianship,' or 'librarians'
Also known as truncation
? (question mark): represents variations of a single character
For example, searching for 'wom?n' will retrieve results containing the words 'woman' or 'women'