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 ;"

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