Perhaps you should try some spelling variations:
"harvard world bank studies from service." » "harvard world case studies from service.", "harvard world bank study from service.", "harvard world bank studies food service.", "harvard world bank studies from serbia."
"harvard cold urban studies book series." » "harvard good urban studies book series.", "harvard cost urban studies book series.", "harvard second urban studies book series."

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