Use an asterisk (*) as a wild card
Used at the end of a word, the asterisk (*) is like a wild card and can replace up to 5 characters. It allows you to broaden your search by including plurals, adjectives, adverbs and conjugated words.
For example: typing HTML vbscript program* will retrieve documents with the words HTML, vbscript and program, programmers, programmable and so on.