Perhaps you should try some spelling variations:
mexicano » mexico, americano
mexicana » americana
americanos » americans, americano, american
americanus » americans, american, americas
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: (((mexicano OR mexicana) OR (americanos OR americanus)) OR mexican) / united states.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((mexicano OR mexicana) or (americanos or americanus)) or mexican) / united states".
• Adding a wildcard symbol may retrieve word variants: (((mexicano OR mexicana) or (americanos or americanus)) or mexican) / united states*.