Perhaps you should try some spelling variations:
"et latvian estonian" » "et latvian social", "_ latvian estonian", "10 latvian estonian", "7 latvian estonian"
"et slavica estonian" » "et place estonian", "res slavica estonian", "_ slavica estonian"
"acta latvia estonia" » "haiti latvia estonia"

You may be able to get more results by adjusting your search query.

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