Perhaps you should try some spelling variations:
"harvard toll regional studies book series." » "harvard toll regional dummies book series.", "harvard toll global studies book series.", "harvard all regional studies book series.", "harvard local regional studies book series.", "harvard model regional studies book series.", "harvard home regional studies book series.", "harvard toll regional studies books series."
"harvard cold wave studies ebook series." » "harvard cold case studies ebook series.", "harvard cold game studies ebook series.", "harvard cold care studies ebook series.", "harvard cold wave studies textbook series.", "harvard cold wave studies yearbook series.", "harvard cold wave studies bank series.", "harvard cold water studies ebook series.", "harvard cold war studies ebook series.", "harvard cold wave studies ebooks 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 cold wave studies ebook series.") or ("harvard toll regional studies book series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard cold wave studies ebook series.") OR ("harvard toll regional studies book series.")).
• Removing quotes may allow a broader search: (( harvard cold wave studies ebook series. ) or ( harvard toll regional studies book series. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard cold wave studies ebook series.") or ("harvard toll regional studies book series."))*.