Perhaps you should try some spelling variations:
"harvard world case studies book series." » "harvard cold case studies book series.", "harvard world class studies book series.", "harvard world case studies books series.", "harvard world case studies ebook series."
"harvard bond bank studies fuel source." » "harvard cold bank studies fuel source.", "harvard home bank studies fuel source.", "harvard bond urban studies fuel source.", "harvard bond bank study fuel source.", "harvard bond bank studies cruel source.", "harvard bond bank studies field source.", "harvard bond bank studies from source.", "harvard blood bank studies fuel source.", "harvard land bank studies fuel source.", "harvard bad bank studies fuel source.", "harvard bond bank studies fuel sources.", "harvard bond bank studies fuel resource."

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 bond bank studies fuel source."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world case studies book series.") OR ("harvard bond bank studies fuel source."))*.
• Removing quotes may allow a broader search: (( harvard world case studies book series. ) or ( harvard bond bank studies fuel source. ))*.