* The name is misspelled. There might be a very similar name, like "Mavis Voigt" or "Avis Voigt".
* The author is not well-known. They may have written under a different name or have a very niche audience.
* You are thinking of a different person. Double check your source to ensure you are looking at the correct author.
To help me find the right author, could you please provide more information?
* Are you sure about the name?
* What kind of books are you looking for? (Genre, subject matter, etc.)
* Do you know any other details about the author? (Location, time period, etc.)
With more information, I may be able to help you find the author you're looking for.