Perhaps you should try some spelling variations:
"acta slavica estonian" » "acta place estonian", "anna slavina estonian", "art slavic estonian", "et slavica estonian"
"acta latvian estonian" » "acta latvian social", "suna latvian estonian", "toth latvian estonian"
"1 latvia estonia" » "11 latvia estonia", "19 latvia estonia", "_ latvia estonia"

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 ("acta latvian estonian"))) OR ("1 latvia estonia")).
• Removing quotes may allow a broader search: (((( acta slavica estonian ) or ( acta latvian estonian ))) or ( 1 latvia estonia )).
• Adding a wildcard symbol may retrieve word variants: (((("acta slavica estonian") or ("acta latvian estonian"))) or ("1 latvia estonia"))*.