Perhaps you should try some spelling variations:
"harvard world war studies from sources." » "harvard cold war studies from sources.", "harvard world war stories from sources.", "harvard world early studies from sources."
"harvard good bank studies firm surveys." » "harvard cold bank studies firm surveys.", "harvard home bank studies firm surveys.", "harvard good urban studies firm surveys.", "harvard good bank study firm surveys.", "harvard good bank studies confirm surveys.", "harvard good bank studies figure surveys.", "harvard good bank studies formal surveys.", "harvard good bank studies firm survey.", "harvard blood bank studies firm surveys.", "harvard good bad studies firm 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 world war studies from sources.") or ("harvard good bank studies firm surveys."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world war studies from sources.") OR ("harvard good bank studies firm surveys.")).
• Removing quotes may allow a broader search: (( harvard world war studies from sources. ) or ( harvard good bank studies firm surveys. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard world war studies from sources.") or ("harvard good bank studies firm surveys."))*.