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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("eastern european series.") OR ("east european sources."))) OR ("eastern europe sources."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"eastern european series.\") OR (\"east european sources.\"))) OR (\"eastern europe sources.\"))".
• Removing quotes may allow a broader search: (((( eastern european series. ) OR ( east european sources. ))) OR ( eastern europe sources. )).
• Adding a wildcard symbol may retrieve word variants: (((("eastern european series.") OR ("east european sources."))) OR ("eastern europe sources."))*.