There are two wildcard characters you can use if you are not sure of the exact spelling of a name.
The underscore ( _ ) will match any single character
The percent sign ( % ) will match any group of characters

Examples:
Suppose you want to search for the last name Hiester but you are not sure if it is spelled Hiester or Heister. If you would search for h__ster (use two underscores) the data returned would contain both spellings.

Suppose you are searching for the name Reinhardt but you know there are several different spellings. If you would enter rein%t (use percent sign) as your search term the data returned would contain the names reinhardt, reinhart, reinert etc.

It is also possible to combine the two wildcard characters in the same search term. The wildcards characters will work in both the first and last name search fields.