Perhaps you should try some spelling variations:
"western europe sources." » "eastern europe sources.", "western european sources."
"western crete studies." » "western cretan studies.", "eastern crete studies.", "western art studies.", "western creole studies.", "western rate studies.", "western write studies."
"western diet studies." » "western blot studies.", "western det studies.", "western pet studies.", "western set studies."

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: (("western europe sources.") or ((("western crete studies.") OR ("western diet studies."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("western europe sources.") OR ((("western crete studies.") OR ("western diet studies.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"western europe sources.\") or (((\"western crete studies.\") OR (\"western diet studies.\"))))".
• Removing quotes may allow a broader search: (( western europe sources. ) or ((( western crete studies. ) OR ( western diet studies. )))).
• Adding a wildcard symbol may retrieve word variants: (("western europe sources.") or ((("western crete studies.") OR ("western diet studies."))))*.