Perhaps you should try some spelling variations:
"harvard cold bank studies book series." » "harvard cold bank study book series.", "harvard world bank studies book series.", "harvard bond bank studies book series.", "harvard good bank studies book series.", "harvard cold bank studies books series.", "harvard cold bank studies ebook series."
"harvard second urban studies book series." » "harvard beyond urban studies book series.", "harvard second great studies book series.", "harvard second bank studies book series.", "harvard second urban studies books series.", "harvard second urban studies ebook 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 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. ))*.