Perhaps you should try some spelling variations:
"acta slavica estonia" » "acta slovenia estonia", "anna slavina estonia", "art slavic estonia", "et slavica estonia"
"balto slavic estonia" » "balto slovenia 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 latvia estonia\") OR (\"balto slavic estonia\"))))".
• Removing quotes may allow a broader search: (( acta slavica estonia ) OR ((( art latvia estonia ) OR ( balto slavic estonia )))).
• Adding a wildcard symbol may retrieve word variants: (("acta slavica estonia") OR ((("art latvia estonia") OR ("balto slavic estonia"))))*.