To perform a single character wildcard search use the "?" symbol. The type of search looks for terms that match that with the single character replaced. For example, to search for "John" or "Joan", use the search query:
To perform a multiple character wildcard search use the "*" symbol. This type of search looks for zero or more characters. For example, to search for "keyboard", "keyboards", "keyboardist", "keyboardists", use the search query:
Note: You cannot use a "*" or "?" symbol as the first character of a search.