Perhaps you should try some spelling variations:
"harvard world bank studies from series." » "harvard world urban studies from series.", "harvard world bank studies rom series.", "harvard world bank studies from services.", "harvard world bank studies forum series."
"harvard cold bank study book series." » "harvard cold bank studies book series.", "harvard bond bank study book series.", "harvard good bank study book series.", "harvard food bank study book 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 cold bank study book series.") OR ("harvard world bank studies from series."))~.
• Removing quotes may allow a broader search: (( harvard cold bank study book series. ) or ( harvard world bank studies from series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard cold bank study book series.") or ("harvard world bank studies from series."))*.