Perhaps you should try some spelling variations:
"harvard world case studies from service." » "harvard world case studies food service.", "harvard world case studies from serbia.", "harvard world class studies from service.", "harvard worst case studies from service."
"harvard land banks study from series." » "harvard land bank study from series.", "harvard land banks study from sources.", "harvard land banks study from surveys.", "harvard land banks study from serbian."

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 case studies from service.") or ("harvard land banks study from series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world case studies from service.") OR ("harvard land banks study from series.")).
• Removing quotes may allow a broader search: (( harvard world case studies from service. ) or ( harvard land banks study from series. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard world case studies from service.") or ("harvard land banks study from series."))*.