Perhaps you should try some spelling variations:
"res slavica estonian" » "res latvia estonia", "res latvian estonian", "res place estonian", "et slavica estonian"
"art slavic estonian" » "art latvian estonian", "east slavic estonian", "art static estonian", "proto slavic estonian"
"balto slavic estonian" » "balto latvian estonian"

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: (((("art slavic estonian") OR ("balto slavic estonian"))) OR ("res slavica estonian")).
• Removing quotes may allow a broader search: (((( art slavic estonian ) or ( balto slavic estonian ))) or ( res slavica estonian )).
• Adding a wildcard symbol may retrieve word variants: (((("art slavic estonian") or ("balto slavic estonian"))) or ("res slavica estonian"))*.