Perhaps you should try some spelling variations:
"harvard cold urban studies books series." » "harvard cold urban studies book series.", "harvard cold urban studies booklet series.", "harvard cold urban student books series.", "harvard cold urban studies books strips.", "harvard clld urban studies books series.", "harvard world urban studies books series.", "harvard good urban studies books series."
"harvard world case studies force surveys." » "harvard world case studies formal surveys.", "harvard world case studies from surveys.", "harvard world case studies food surveys.", "harvard world case studies force survey.", "harvard world case studies firm surveys.", "harvard world class studies force surveys."

Try widening your search to All Fields.

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