Perhaps you should try some spelling variations:
"harvard world bank study book series." » "harvard cold bank study book series.", "harvard world bank studies book series."
"harvard cost urban studies from service." » "harvard cold urban studies from service.", "hardware cost urban studies from service.", "harvard camp urban studies from service.", "harvard cost urban studies from serbia.", "harvard most urban studies from service.", "harvard worst urban studies from service.", "harvard bust urban studies from service."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("harvard cost urban studies from service.") or ("harvard world bank study book series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard cost urban studies from service.") OR ("harvard world bank study book series.")).
• Removing quotes may allow a broader search: (( harvard cost urban studies from service. ) or ( harvard world bank study book series. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard cost urban studies from service.") or ("harvard world bank study book series."))*.