Perhaps you should try some spelling variations:
mexicanos » mexicana, mexicanas, mexicos, americanos
americana » american, americans, america
mexicano » mexicana, mexico, americano
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: ((((mexicanos OR americana) OR mexicano) OR americanus) OR mexican) / united states.
• Adding a wildcard symbol may retrieve word variants: ((((mexicanos or americana) or mexicano) or americanus) or mexican) / united states*.