Perhaps you should try some spelling variations:
studies force » studies formal, studies food
force surveys » force survey, firm surveys
harvard bond » harvard home
from surveys » from survey, firm surveys
cold urban » clld urban, world urban, good urban
bond urban » beyond urban, good urban, bank urban

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 urban studies force surveys. ) or ( harvard bond urban studies from surveys. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( harvard cold urban studies force surveys. ) OR ( harvard bond urban studies from surveys. )).
• Adding a wildcard symbol may retrieve word variants: (( harvard cold urban studies force surveys. ) or ( harvard bond urban studies from surveys. ))*.