Perhaps you should try some spelling variations:
"harvard world bank studies book series." » "harvard cold bank studies book series.", "harvard world urban studies book series.", "harvard world bank study book series.", "harvard world bank studies books series.", "harvard world bank studies ebook series."
"harvard world case studies from series." » "harvard cold case studies from series.", "harvard world case studies rom series.", "harvard world case studies from services.", "harvard world case studies forum series.", "harvard world class studies from 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 world bank studies book series.") or ("harvard world case studies from series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world bank studies book series.") OR ("harvard world case studies from series.")).
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• Adding a wildcard symbol may retrieve word variants: (("harvard world bank studies book series.") or ("harvard world case studies from series."))*.