Perhaps you should try some spelling variations:
moderno mexico » modern mexico, gobierno mexico, governors mexico
poderes mexico » pobres mexico, mujeres mexico, bodies mexico
poder mexico » power mexico, modern mexico, murder mexico
dos editores » los editores, dos escritores, los auditores
y medicos » y medios, y medicion, de medicos
tu dos » du dos

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: ((((((poder mexico) OR (moderno mexico))) OR (poderes mexico))) OR (y medicos)), tu dos editores.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((poder mexico) OR (moderno mexico))) or (poderes mexico))) or (y medicos)), tu dos editores.~".
• Adding a wildcard symbol may retrieve word variants: ((((((poder mexico) OR (moderno mexico))) or (poderes mexico))) or (y medicos)), tu dos editores.*.