Perhaps you should try some spelling variations:
"harvard world bank studies from sources." » "harvard cold bank studies from sources.", "harvard world urban studies from sources.", "harvard world bank study from sources."
"harvard worst case studies book series." » "harvard worse case studies book series.", "harvard worst case studies books series.", "harvard worst case 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 worst case studies book series.") or ("harvard world bank studies from sources."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard worst case studies book series.") OR ("harvard world bank studies from sources."))*.
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