Perhaps you should try some spelling variations:
"harvard world case studies book series." » "harvard cold case studies book series.", "harvard world class studies book series.", "harvard world case studies books series.", "harvard world case studies ebook series."
"harvard world war studies from series." » "harvard cold war studies from series.", "harvard world war stories from series.", "harvard world early studies from series.", "harvard world war studies rom series.", "harvard world war studies from services.", "harvard world war studies forum series."

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