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