Perhaps you should try some spelling variations:
"federal mexicano en anestesiologia. ;" » "federal mexico en anestesiologia. ;", "del mexicano en anestesiologia. ;", "penal mexicano en anestesiologia. ;", "federal mexicanos en anestesiologia. ;", "federal mexicana en anestesiologia. ;"
"politica medica de anestesiologia. ;" » "politica america de anestesiologia. ;", "politica mexico de anestesiologia. ;", "practica medica de anestesiologia. ;", "politica medida de anestesiologia. ;", "politica media de anestesiologia. ;", "politica medicina 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: (("federal mexicano en anestesiologia. ;") or ("politica medica de anestesiologia. ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("federal mexicano en anestesiologia. ;") OR ("politica medica de anestesiologia. ;")).
• Removing quotes may allow a broader search: (( federal mexicano en anestesiologia. ; ) or ( politica medica de anestesiologia. ; )).
• Adding a wildcard symbol may retrieve word variants: (("federal mexicano en anestesiologia. ;") or ("politica medica de anestesiologia. ;"))*.