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