Perhaps you should try some spelling variations:
"harvard world bank studies from series." » "harvard world urban studies from series.", "harvard world bank study from series.", "harvard world bank studies rom series.", "harvard world bank studies from services.", "harvard world bank studies forum series."
"harvard cold case studies book series." » "harvard world case studies book series.", "harvard cold call studies book series.", "harvard cold wave studies book series.", "harvard cold case studies books series.", "harvard cold case studies ebook series."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"harvard cold case studies book series.\") OR (\"harvard world bank studies from series.\"))~".
• Removing quotes may allow a broader search: (( harvard cold case studies book series. ) OR ( harvard world bank studies from series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard cold case studies book series.") OR ("harvard world bank studies from series."))*.