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