Perhaps you should try some spelling variations:
"harvard cold ripe studies from series." » "harvard cold ripe series from series.", "harvard cold ripe studies rom series.", "harvard cold ripe studies from services.", "harvard cold ripe studies forum series.", "harvard old rope studies from series."
"harvard world case studies book series." » "harvard world class studies book series.", "harvard world case studies books series.", "harvard world case studies ebook 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 cold ripe studies from series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world case studies book series.") OR ("harvard cold ripe studies from series."))*.
• Removing quotes may allow a broader search: (( harvard world case studies book series. ) or ( harvard cold ripe studies from series. ))*.