Perhaps you should try some spelling variations:
"harvard food bank studies book series." » "harvard food urban studies book series.", "harvard food case studies book series.", "harvard food bank study book series.", "harvard good bank studies book series.", "harvard blood bank studies book series.", "harvard good banks studies book series."
"harvard world bank studies from series." » "harvard world urban studies from series.", "harvard world case studies from series.", "harvard world bank study from series.", "harvard world bank studies from sources.", "harvard world bank studies from service.", "harvard world bank studies from surveys."

Try widening your search to All Fields.

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

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