Perhaps you should try some spelling variations:
"cronicas americano en anestesiologia ;" » "cronicas americanas en anestesiologia ;", "cronica mexicana en anestesiologia ;", "tropico americano en anestesiologia ;", "cronicas americana en anestesiologia ;"
"clinico mexicano de anestesiologia ;" » "critico mexicano de anestesiologia ;", "politico mexicano de anestesiologia ;", "fisico mexicano de anestesiologia ;", "clinico mexicana 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: (("clinico mexicano de anestesiologia ;") or ("cronicas americano en anestesiologia ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("clinico mexicano de anestesiologia ;") OR ("cronicas americano en anestesiologia ;"))*.
• Removing quotes may allow a broader search: (( clinico mexicano de anestesiologia ; ) or ( cronicas americano en anestesiologia ; ))*.