Perhaps you should try some spelling variations:
"harvard world urban studies book series." » "harvard world urban studies from series.", "harvard world ran studies book series."
"harvard cold bank study from series." » "harvard cold bank study from sources.", "harvard cold bank study from service.", "harvard cold bank study from surveys.", "harvard cold bank studies from series.", "harvard world bank study from series.", "harvard bond bank study from series.", "harvard good bank study from 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 cold bank study from series.") OR ("harvard world urban studies book series."))~.
• Removing quotes may allow a broader search: (( harvard cold bank study from series. ) or ( harvard world urban studies book series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard cold bank study from series.") or ("harvard world urban studies book series."))*.