Perhaps you should try some spelling variations:
"harvard world class studies book series." » "harvard world cass studies book series.", "harvard world cases studies book series.", "harvard world css studies book series.", "harvard cold class studies book series.", "harvard world class studies books series.", "harvard world class studies ebook series."
"harvard bond bank study from survey." » "harvard cold bank study from survey.", "harvard home bank study from survey.", "harvard bond bank study firm survey.", "harvard bond bank studies from survey.", "harvard blood bank study from survey.", "harvard land bank study from survey.", "harvard bad bank study from survey."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("harvard bond bank study from survey.") or ("harvard world class studies book series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard bond bank study from survey.") OR ("harvard world class studies book series."))*.
• Removing quotes may allow a broader search: (( harvard bond bank study from survey. ) or ( harvard world class studies book series. ))*.