Perhaps you should try some spelling variations:
"fastern european sources." » "eastern european sources.", "western european sources.", "foster european sources.", "fastern european studies.", "fastern european series.", "fastern european southern."
"east european cities." » "east european countries.", "east european politics.", "east european communities.", "fast european cities."
"eastern europe sources." » "fastern europe sources."

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: (((("fastern european sources.") or ("east european cities."))) or ("eastern europe sources."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("fastern european sources.") OR ("east european cities."))) OR ("eastern europe sources.")).
• Removing quotes may allow a broader search: (((( fastern european sources. ) or ( east european cities. ))) or ( eastern europe sources. )).
• Adding a wildcard symbol may retrieve word variants: (((("fastern european sources.") or ("east european cities."))) or ("eastern europe sources."))*.