Perhaps you should try some spelling variations:
"acta slavica estonian" » "acta latvia estonia", "acta latvian estonian", "acta place estonian", "anna slavina estonian", "art slavic estonian"
"et slavica estonian" » "et latvia estonia", "et latvian estonian", "et place estonian", "res slavica estonian", "_ slavica estonian"
"acta latvian social" » "acta latvia's social", "acta asian social", "acta adrian social", "toth latvian social"
"suna latvian social" » "suna latvia's social", "suna asian social", "suna adrian social", "songs latvian social", "using latvian social"

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 estonian") OR ("et slavica estonian"))) OR ((("acta latvian social") OR ("suna latvian social")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"acta slavica estonian\") or (\"et slavica estonian\"))) or (((\"acta latvian social\") OR (\"suna latvian social\"))))".
• Removing quotes may allow a broader search: (((( acta slavica estonian ) or ( et slavica estonian ))) or ((( acta latvian social ) OR ( suna latvian social )))).
• Adding a wildcard symbol may retrieve word variants: (((("acta slavica estonian") or ("et slavica estonian"))) or ((("acta latvian social") OR ("suna latvian social"))))*.