Perhaps you should try some spelling variations:
"harvard bad case studies book series." » "harvard bad case studies from series.", "harvard a case studies book series.", "harvard id case studies book series."
"harvard second urban studies book series." » "harvard second urban studies from series.", "harvard second loan studies book series.", "harvard second rural studies book series."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard bad case studies book series.") OR ("harvard second urban studies book series."))~.
• Removing quotes may allow a broader search: (( harvard bad case studies book series. ) or ( harvard second urban studies book series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard bad case studies book series.") or ("harvard second urban studies book series."))*.