Perhaps you should try some spelling variations:
"harvard cold bank study from sources." » "harvard cold bank studies from sources.", "harvard world bank study from sources.", "harvard bond bank study from sources.", "harvard good bank study from sources."
"harvard cold urban studies book series." » "harvard clld urban studies book series.", "harvard world urban studies book series.", "harvard good urban studies book series.", "harvard cold urban studies books series.", "harvard cold urban studies ebook 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 study from sources.") or ("harvard cold urban studies book series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard cold bank study from sources.") OR ("harvard cold urban studies book series.")).
• Removing quotes may allow a broader search: (( harvard cold bank study from sources. ) or ( harvard cold urban studies book series. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard cold bank study from sources.") or ("harvard cold urban studies book series."))*.