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