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

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