Perhaps you should try some spelling variations:
"harvard world case studies from series." » "harvard world case studies from sources.", "harvard world case studies from service.", "harvard world case studies from surveys.", "harvard world class studies from series.", "harvard worst case studies from series."
"harvard cold case studies book series." » "harvard cold wave 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 cold case studies book series.") or ("harvard world case studies from series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard cold case studies book series.") OR ("harvard world case studies from series.")).
• Removing quotes may allow a broader search: (( harvard cold case studies book series. ) or ( harvard world case studies from series. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard cold case studies book series.") or ("harvard world case studies from series."))*.