Perhaps you should try some spelling variations:
"forward covid scale studies book series." » "forward moving scale studies book series.", "forward food scale studies book series.", "forward covid case studies book series.", "forward covid scale studies books series.", "forward covid scale studies ebook series."
"harvard land bank studies book series." » "harvard cold bank studies book series.", "harvard camp bank studies book series.", "harvard land urban studies book series.", "harvard land bank study book series.", "harvard land banks studies book series.", "harvard land bank studies books series.", "harvard land bank studies ebook series."

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: (("harvard land bank studies book series.") OR ("forward covid scale studies book series."))~.
• Removing quotes may allow a broader search: (( harvard land bank studies book series. ) or ( forward covid scale studies book series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard land bank studies book series.") or ("forward covid scale studies book series."))*.