Perhaps you should try some spelling variations:
"michael heller author" » "michael goller author", "michael muller author", "michael hall author", "michael feller author", "michael helme author", "michael miller author"
"michael one author" » "michael jones author", "michael lione author", "michael thone author", "michael browne author", "michael paine author"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("michael heller author") OR ("michael one author"))*.
• Removing quotes may allow a broader search: (( michael heller author ) or ( michael one author ))*.