Perhaps you should try some spelling variations:
"clinical medicina del anestesiologia ;" » "clinical medicina de anestesiologia ;", "clinical medicina en anestesiologia ;", "clinical medicina la anestesiologia ;", "clinical medicine del anestesiologia ;", "clinica medica del anestesiologia ;", "clinicas mexicanas del anestesiologia ;"
"politicas publicas y anestesiologia ;" » "politicas publicas de anestesiologia ;", "politicas publicas en anestesiologia ;", "politicas publicas la anestesiologia ;", "politica publicas y anestesiologia ;", "political publicas y anestesiologia ;", "politicos publicas y 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: (("politicas publicas y anestesiologia ;") or ("clinical medicina del anestesiologia ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("politicas publicas y anestesiologia ;") OR ("clinical medicina del anestesiologia ;")).
• Removing quotes may allow a broader search: (( politicas publicas y anestesiologia ; ) or ( clinical medicina del anestesiologia ; )).
• Adding a wildcard symbol may retrieve word variants: (("politicas publicas y anestesiologia ;") or ("clinical medicina del anestesiologia ;"))*.