It seems you are asking for a way to find all items (e.g. authors) that have an attached note, then find all books with 1 or more of the found authors. Is this right?
If so then doing it in the notes browser probably isn't straight forward because that browser doesn't know about books. However, it can be done in a template search (with a python template). The template would first get a list of item names with notes, check book-by-book if one of those item names is associated with the book, resulting in a standard search result list.
I will think a bit about it, and assuming I am right then provide an example.
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