Perhaps you should try some spelling variations:
"harvard world war studies from service." » "harvard world war studies from serbia.", "harvard world war stories from service.", "harvard world early studies from service."
"harvard cold bank studies food surveys." » "harvard cold urban studies food surveys.", "harvard cold bank study food surveys.", "harvard cold bank students food surveys.", "harvard cold bank studies field surveys.", "harvard cold bank studying food surveys.", "harvard cold bank studies from surveys.", "harvard cold bank studies force surveys.", "harvard world bank studies food surveys.", "harvard bond bank studies food surveys.", "harvard good bank studies food 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 service.") or ("harvard cold bank studies food surveys."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard world war studies from service.") OR ("harvard cold bank studies food surveys.")).
• Removing quotes may allow a broader search: (( harvard world war studies from service. ) or ( harvard cold bank studies food surveys. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard world war studies from service.") or ("harvard cold bank studies food surveys."))*.