Perhaps you should try some spelling variations:
"plata mexicana en anestesiologia ;" » "plata mexicana de anestesiologia ;", "plastica mexicana en anestesiologia ;", "latina mexicana en anestesiologia ;", "elite mexicana en anestesiologia ;"
"politica medica en anestesiologia ;" » "politica medica de anestesiologia ;", "politica america en anestesiologia ;", "politica mexico en anestesiologia ;", "practica medica en anestesiologia ;", "politica media en anestesiologia ;", "politica medicina en anestesiologia ;"

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: (("plata mexicana en anestesiologia ;") OR ("politica medica en anestesiologia ;"))~.
• Removing quotes may allow a broader search: (( plata mexicana en anestesiologia ; ) or ( politica medica en anestesiologia ; ))~.
• Adding a wildcard symbol may retrieve word variants: (("plata mexicana en anestesiologia ;") or ("politica medica en anestesiologia ;"))*.