Perhaps you should try some spelling variations:
harvard based » hardware based
harvard bond » harvard cold, harvard home
rate studies » race studies, trade studies, state studies
based urban » basic urban
studies rom » studies from, studies rome, studies role
rom series » forum series
book » books, ebook

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( harvard based urban studies rom series. ) or ( harvard bond rate studies book series. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( harvard based urban studies rom series. ) OR ( harvard bond rate studies book series. )).
• Adding a wildcard symbol may retrieve word variants: (( harvard based urban studies rom series. ) or ( harvard bond rate studies book series. ))*.