Perhaps you should try some spelling variations:
harvard bond » harvard cold, harvard home
bank studies » urban studies, bank study
from surveys » from survey, force surveys
studies firm » studies confirm, studies figure, studies formal
firm surveys » firm survey
bond bank » blood bank, land bank, bad bank

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( harvard bond bank studies from surveys. ) or ( harvard bond bank studies firm surveys. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( harvard bond bank studies from surveys. ) OR ( harvard bond bank studies firm surveys. )).
• Adding a wildcard symbol may retrieve word variants: (( harvard bond bank studies from surveys. ) or ( harvard bond bank studies firm surveys. ))*.