Perhaps you should try some spelling variations:
"harvard world war studies force surveys." » "harvard world war studies force survey.", "harvard world war studies firm surveys.", "harvard world war studies from surveys.", "harvard world war studies food surveys.", "harvard world war studies pre surveys.", "harvard world bank studies force surveys."
"harvard cold case studies book series." » "harvard cold case studies from series.", "harvard world case studies book series.", "harvard cold wave studies book series."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"harvard cold case studies book series.\") OR (\"harvard world war studies force surveys.\"))~".
• Removing quotes may allow a broader search: (( harvard cold case studies book series. ) OR ( harvard world war studies force surveys. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard cold case studies book series.") OR ("harvard world war studies force surveys."))*.