Perhaps you should try some spelling variations:
"cronicas americanos de anestesiologia. ;" » "cronicas americanas de anestesiologia. ;", "colonias americanas de anestesiologia. ;", "chicas americanas de anestesiologia. ;", "cronicas americana de anestesiologia. ;", "cronicas americano en anestesiologia. ;"
"cronica mexicana en anestesiologia. ;" » "botanica mexicana en anestesiologia. ;", "prensa mexicana en anestesiologia. ;", "cronica mexicana 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: (("cronica mexicana en anestesiologia. ;") or ("cronicas americanos de anestesiologia. ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cronica mexicana en anestesiologia. ;") OR ("cronicas americanos de anestesiologia. ;")).
• Removing quotes may allow a broader search: (( cronica mexicana en anestesiologia. ; ) or ( cronicas americanos de anestesiologia. ; )).
• Adding a wildcard symbol may retrieve word variants: (("cronica mexicana en anestesiologia. ;") or ("cronicas americanos de anestesiologia. ;"))*.