Perhaps you should try some spelling variations:
"harvard cold case studies food surveys." » "harvard cold case studies from surveys.", "harvard cold case studies force surveys.", "harvard cold case studies field surveys.", "harvard cold case studies led surveys.", "harvard world case studies food surveys.", "harvard cold wave studies food surveys."
"harvard world war studies from series." » "harvard world bank studies from series.", "harvard world war studies from sources.", "harvard world war studies from service.", "harvard world war studies from surveys."

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