Perhaps you should try some spelling variations:
studies formal » studies thermal, studies female, studies german
formal surveys » firm surveys, force surveys, social surveys
harvard flood » harvard cold
harvard bond » harvard cold, harvard home
sale studies » scale studies, sage studies, state studies
bank studies » urban studies, bank study
flood bank » blood bank, food bank, blood banks
bond sale » bond sales, bond rate

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