Perhaps you should try some spelling variations:
"western eurasia studies." » "western eurasian studies.", "western asia studies.", "western australia studies.", "western eria studies."
"western europe sources." » "eastern europe sources.", "western european sources."
"western group studies." » "western crops studies.", "western cross studies.", "western gray studies.", "western growth studies.", "western group study.", "western up 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 eurasia studies.") or ("western group studies."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("western europe sources.") OR ((("western eurasia studies.") OR ("western group studies.")))).
• Removing quotes may allow a broader search: (( western europe sources. ) or ((( western eurasia studies. ) or ( western group studies. )))).
• Adding a wildcard symbol may retrieve word variants: (("western europe sources.") or ((("western eurasia studies.") or ("western group studies."))))*.