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