Perhaps you should try some spelling variations:
"harvard world war studies book series." » "harvard cold war studies book series.", "harvard world war stories book series.", "harvard world early studies book series.", "harvard world war studies books series.", "harvard world war studies ebook series."
"harvard world case studies from service." » "harvard cold case studies from service.", "harvard world case studies from serbia.", "harvard world class studies from service."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("harvard world war studies book series.") or ("harvard world case studies from service."))~.
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