Perhaps you should try some spelling variations:
"harvard cold bank studies book series." » "harvard cold case studies book series.", "harvard cold bank study book series.", "harvard cold bank studies from series.", "harvard world bank studies book series.", "harvard bond bank studies book series.", "harvard good bank studies book series."
"harvard second urban studies book series." » "harvard second urban studies from series.", "harvard second loan studies book series.", "harvard second rural studies book series."

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