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