Perhaps you should try some spelling variations:
"western european sources." » "eastern european sources.", "eastern europe sources.", "western european studies.", "western european series.", "western european southern."
"western europe sources." » "eastern europe sources."
"western europa studies." » "western eurasia studies.", "eastern europe studies.", "western crops studies.", "western european studies.", "western auroral studies.", "western crop 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 european sources."))) or ("western europa studies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("western europe sources.") OR ("western european sources."))) OR ("western europa studies.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"western europe sources.\") OR (\"western european sources.\"))) or (\"western europa studies.\"))".
• Removing quotes may allow a broader search: (((( western europe sources. ) OR ( western european sources. ))) or ( western europa studies. )).
• Adding a wildcard symbol may retrieve word variants: (((("western europe sources.") OR ("western european sources."))) or ("western europa studies."))*.