It's possible:
* The name is misspelled. Check for variations (e.g., F.W. Nieman, F.W. Newman).
* The author is less well-known. Try searching for more specific information, such as their genre, nationality, or time period.
* The author uses a pseudonym. If you have any other information about them (like a book title or subject), you could use those details to search for their real name.
Could you please provide more information about the author you're looking for?