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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"acta slavica estonia\") OR (((\"art slavic estonia\") OR (\"art latvia estonia\"))))".
• Removing quotes may allow a broader search: (( acta slavica estonia ) OR ((( art slavic estonia ) OR ( art latvia estonia )))).
• Adding a wildcard symbol may retrieve word variants: (("acta slavica estonia") OR ((("art slavic estonia") OR ("art latvia estonia"))))*.