Perhaps you should try some spelling variations:
"acta slavica estonia" » "acta latvia estonia", "anna slavina estonia", "et slavica estonia"
"art slavic estonia" » "art latvia estonia", "east slavic estonia", "art static estonia", "balto slavic estonia"
"acta slovenia estonia" » "malta slovenia estonia", "area slovenia estonia", "art slovenia estonia"
"art spain estonia" » "art spain sonia", "art japan estonia", "art spain ethnic", "arts spain estonia", "art pain estonia", "art spin 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 ("acta slovenia estonia"))) OR ((("art slavic estonia") OR ("art spain estonia")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"acta slavica estonia\") or (\"acta slovenia estonia\"))) or (((\"art slavic estonia\") OR (\"art spain estonia\"))))".
• Removing quotes may allow a broader search: (((( acta slavica estonia ) or ( acta slovenia estonia ))) or ((( art slavic estonia ) OR ( art spain estonia )))).
• Adding a wildcard symbol may retrieve word variants: (((("acta slavica estonia") or ("acta slovenia estonia"))) or ((("art slavic estonia") OR ("art spain estonia"))))*.