Perhaps you should try some spelling variations:
"acta slavica estonia" » "acta latvia estonia", "art slavic estonia", "et slavica estonia"
"anna slavina estonia" » "anna latvia estonia", "anna spain estonia", "anna golovina estonia", "anna karina estonia", "anna lina estonia"
"acta slovenia estonia" » "malta slovenia estonia", "area slovenia estonia", "art slovenia estonia"

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 ("anna slavina estonia"))) OR ("acta slovenia estonia"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"acta slavica estonia\") OR (\"anna slavina estonia\"))) or (\"acta slovenia estonia\"))*".
• Removing quotes may allow a broader search: (((( acta slavica estonia ) OR ( anna slavina estonia ))) or ( acta slovenia estonia ))*.