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