Perhaps you should try some spelling variations:
"harvard world case studies books series." » "harvard world case studies book series.", "harvard world case studies booklet series.", "harvard world case student books series.", "harvard world case studies books strips.", "harvard world class studies books series."
"harvard cold war studies from surveys." » "harvard cold war studies from survey.", "harvard cold war studies firm surveys.", "harvard cold war studies force surveys.", "harvard cold war stories from surveys.", "harvard cold early studies from surveys.", "harvard world war studies from surveys."

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 war studies from surveys.") or ("harvard world case studies books series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard cold war studies from surveys.") OR ("harvard world case studies books series."))*.
• Removing quotes may allow a broader search: (( harvard cold war studies from surveys. ) or ( harvard world case studies books series. ))*.