Perhaps you should try some spelling variations:
"harvard good bank study book series." » "harvard cold bank study book series.", "harvard home bank study book series.", "harvard good bank studies book series.", "harvard blood bank study book series."
"harvard good bad studies from surveys." » "harvard cold bad studies from surveys.", "harvard home bad studies from surveys.", "harvard good bad studies from survey.", "harvard good bad studies firm surveys.", "harvard good bad studies force surveys.", "harvard good based studies from surveys.", "harvard good eadi studies from surveys.", "harvard good oecd studies from surveys."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("harvard good bank study book series.") or ("harvard good bad studies from surveys."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard good bank study book series.") OR ("harvard good bad studies from surveys.")).
• Removing quotes may allow a broader search: (( harvard good bank study book series. ) or ( harvard good bad studies from surveys. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard good bank study book series.") or ("harvard good bad studies from surveys."))*.