* The name is misspelled. Perhaps you are thinking of a different author with a similar name.
* The author is relatively unknown. There could be authors with that name working in a niche field or with limited publication history.
* The author uses a pen name. It's possible that "C Hanlet" is a pseudonym for a different author.
To help me find the author you're looking for, could you provide any additional information, such as:
* Genre of their work: What kind of books do they write?
* Specific titles: Do you know the name of any books they have written?
* Time period: When were their books published?
With more information, I can assist you in finding the author you're searching for.