Perhaps you should try some spelling variations:
"politica mexicanas de anestesiologia." » "politica mexicana de anestesiologia.", "politico mexicano de anestesiologia.", "politica americana de anestesiologia.", "politica mexicano de anestesiologia.", "politica mexicana _ anestesiologia."
"climatica mexicana en anestesiologia." » "politica mexicana en anestesiologia.", "climatico mexico en anestesiologia.", "latina mexicana en anestesiologia.", "climatica mexicana de anestesiologia."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("politica mexicanas de anestesiologia.") or ("climatica mexicana en anestesiologia."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("politica mexicanas de anestesiologia.") OR ("climatica mexicana en anestesiologia.")).
• Removing quotes may allow a broader search: (( politica mexicanas de anestesiologia. ) or ( climatica mexicana en anestesiologia. )).
• Adding a wildcard symbol may retrieve word variants: (("politica mexicanas de anestesiologia.") or ("climatica mexicana en anestesiologia."))*.