Perhaps you should try some spelling variations:
"harvard world war studies from surveys." » "harvard world war studies from survey.", "harvard world war studies force surveys.", "harvard world war stories from surveys.", "harvard world early studies from surveys."
"harvard cold bank studies firm surveys." » "harvard cold urban studies firm surveys.", "harvard cold bank study firm surveys.", "harvard cold bank studies confirm surveys.", "harvard cold bank studies figure surveys.", "harvard cold bank studies formal surveys.", "harvard cold bank studies firm survey.", "harvard world bank studies firm surveys.", "harvard bond bank studies firm surveys.", "harvard good bank studies firm surveys."

Try widening your search to All Fields.

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