Perhaps you should try some spelling variations:
"harvard world bank studies from series." » "harvard world urban studies from series.", "harvard world case studies from series.", "harvard world bank studies from sources.", "harvard world bank studies from service.", "harvard world bank studies from surveys."
"harvard bond bank study from series." » "harvard bond bank study from sources.", "harvard bond bank study from service.", "harvard bond bank study from surveys.", "harvard blood bank study from series.", "harvard land bank study from series.", "harvard bad bank study from series."

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