Perhaps you should try some spelling variations:
mexikos » mexiko, lexikons
mexicano » mexicana, mexico, americano
americano » american, americana, americains, americanno
americanos » americans, americanas, americainss, americanus, american, americas, americannos
americans » american, americanns
america » american
mexican » american

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: (((mexikos OR (mexicano OR americano)) OR (americanos OR (americans OR america))) OR mexican) / united states.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((mexikos or (mexicano or americano)) or (americanos or (americans OR america))) or mexican) / united states".
• Adding a wildcard symbol may retrieve word variants: (((mexikos or (mexicano or americano)) or (americanos or (americans OR america))) or mexican) / united states*.