Perhaps you should try some spelling variations:
"harvard cold bank studies from surveys." » "harvard cold bank studies firm surveys.", "harvard cold bank studies force surveys.", "harvard cold urban studies from surveys.", "harvard cold bank study from surveys.", "harvard world bank studies from surveys.", "harvard bond bank studies from surveys.", "harvard good bank studies from surveys."
"harvard cold bank studies from survey." » "harvard cold urban studies from survey.", "harvard cold bank study from survey.", "harvard cold bank studies firm survey.", "harvard world bank studies from survey.", "harvard bond bank studies from survey.", "harvard good 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 cold bank studies from surveys.") OR ("harvard cold bank studies from survey."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"harvard cold bank studies from surveys.\") OR (\"harvard cold bank studies from survey.\"))".
• Removing quotes may allow a broader search: (( harvard cold bank studies from surveys. ) OR ( harvard cold bank studies from survey. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard cold bank studies from surveys.") OR ("harvard cold bank studies from survey."))*.