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