The inquiry will search for a "group" or "string" of characters.
Example:
Entering "Robert"
Results could return: "Jim Robertson" or "Robertson, Jim" or "Robert Smith" but not "Bob Smith" or Rob Smith"
Entering a single character will search for that character as an initial.
Example:
Entering "R"
Results could return: "R. Smith" or "John R Smith" but not 'Rob Smith'