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 en anestesiologia.", "politica mexicana _ anestesiologia."
"climatica mexicana de anestesiologia." » "politica mexicana de anestesiologia.", "climatico mexico de anestesiologia.", "latina mexicana de anestesiologia."

Try widening your search to All Fields.

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