* The name is misspelled. Check if you have the correct spelling.
* The author publishes under a different name. Search for similar names or any known aliases.
* The author is not well-known. It is possible that they are a lesser-known author with limited online presence.
To find out more, you could try:
* Searching for the name on online book databases: like Goodreads, LibraryThing, Amazon, or WorldCat.
* Searching for the name in academic databases: If you are looking for scholarly works, try searching in databases like JSTOR, Google Scholar, or PubMed.
* Consulting with a librarian: They may be able to help you find information about the author.
Without more information, it is difficult to definitively say if there is an author by the name of Charles Harrison-Wallace or what they have written.