Perhaps you should try some spelling variations:
"eastern europe studies." » "eastern europa studies.", "eastern european studies.", "eastern europe sources."
"western cross studies." » "western crops studies.", "western dress studies.", "western blots studies.", "western across studies.", "western crossing studies.", "western process studies."
"western crop studies." » "western crops studies.", "western europe studies.", "western crete studies.", "western group studies.", "western erp studies.", "western hop 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: (("eastern europe studies.") or ((("western crop studies.") or ("western cross studies."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("eastern europe studies.") OR ((("western crop studies.") OR ("western cross studies.")))).
• Removing quotes may allow a broader search: (( eastern europe studies. ) or ((( western crop studies. ) or ( western cross studies. )))).
• Adding a wildcard symbol may retrieve word variants: (("eastern europe studies.") or ((("western crop studies.") or ("western cross studies."))))*.