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