It's possible that:
* There is a typo in the name. Double-check the spelling and try a different search.
* The author uses a pen name. Try searching for other possible names, or looking for books published under that pen name.
* The author is relatively unknown. They may have self-published or published in a niche genre.
If you can provide any additional information about the author, such as the genre they write in, their nationality, or any specific books they have written, it may be easier to locate them.