Perhaps you should try some spelling variations:
"harvard world music studies book series." » "harvard world use studies book series.", "harvard world music studies from series.", "harvard world public studies book series."
"harvard world case studies book series." » "harvard world case studies from series.", "harvard world class studies book series.", "harvard worst case 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 case studies book series.") or ("harvard world music studies book series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world case studies book series.") OR ("harvard world music studies book series."))*.
• Removing quotes may allow a broader search: (( harvard world case studies book series. ) or ( harvard world music studies book series. ))*.