Perhaps you should try some spelling variations:
"cientificas mexicano de anestesiologia." » "cientificos mexicanos de anestesiologia.", "cientifica mexicana de anestesiologia.", "cientificas mexico de anestesiologia.", "cientificas mexicana de anestesiologia."
"clinicas mexicanas de anestesiologia." » "clinicas mexicana de anestesiologia.", "clinicas mexicana en anestesiologia.", "clinicas mexicana _ anestesiologia.", "clinica mexicanas de anestesiologia.", "clinical mexicanas de anestesiologia.", "cronicas mexicanas 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: (("clinicas mexicanas de anestesiologia.") or ("cientificas mexicano de anestesiologia."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("clinicas mexicanas de anestesiologia.") OR ("cientificas mexicano de anestesiologia.")).
• Removing quotes may allow a broader search: (( clinicas mexicanas de anestesiologia. ) or ( cientificas mexicano de anestesiologia. )).
• Adding a wildcard symbol may retrieve word variants: (("clinicas mexicanas de anestesiologia.") or ("cientificas mexicano de anestesiologia."))*.