Perhaps you should try some spelling variations:
"harvard world 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 cold ran studies from series." » "harvard cold iran studies from series.", "harvard cold urban studies from series.", "harvard cold german studies from series.", "harvard cold ran studies rom series.", "harvard cold ran studies from services.", "harvard cold ran studies forum series.", "harvard cold run studies from series.", "harvard cold road studies from series.", "harvard world ran studies from series."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world war studies book series.") OR ("harvard cold ran studies from series."))~.
• Removing quotes may allow a broader search: (( harvard world war studies book series. ) or ( harvard cold ran studies from series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard world war studies book series.") or ("harvard cold ran studies from series."))*.