Perhaps you should try some spelling variations:
"acta slavica estonia" » "acta slovenia estonia", "anna slavina estonia", "art slavic estonia"
"et slavica estonia" » "et slovenia estonia", "res slavica estonia", "_ slavica estonia"
"art latvia estonia" » "art latin estonia", "market latvia estonia", "haiti latvia estonia"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("acta slavica estonia") OR ("et slavica estonia"))) OR ("art latvia estonia")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"acta slavica estonia\") OR (\"et slavica estonia\"))) or (\"art latvia estonia\"))".
• Removing quotes may allow a broader search: (((( acta slavica estonia ) OR ( et slavica estonia ))) or ( art latvia estonia )).
• Adding a wildcard symbol may retrieve word variants: (((("acta slavica estonia") OR ("et slavica estonia"))) or ("art latvia estonia"))*.