Perhaps you should try some spelling variations:
"harvard world bank study force surveys." » "harvard cold bank study force surveys.", "harvard world bank study force survey.", "harvard world bank study firm surveys.", "harvard world bank study forms surveys.", "harvard world bank study forest surveys."
"harvard bond bank studies from survey." » "harvard cold bank studies from survey.", "harvard home bank studies from survey.", "harvard bond urban studies from survey.", "harvard bond bank studies firm survey.", "harvard blood bank studies from survey.", "harvard land bank studies from survey.", "harvard bad bank studies from survey."

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 bank study force surveys.") or ("harvard bond bank studies from survey."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world bank study force surveys.") OR ("harvard bond bank studies from survey.")).
• Removing quotes may allow a broader search: (( harvard world bank study force surveys. ) or ( harvard bond bank studies from survey. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard world bank study force surveys.") or ("harvard bond bank studies from survey."))*.