Perhaps you should try some spelling variations:
"practica medica de anestesiologia." » "practica juridica de anestesiologia.", "practica clinica de anestesiologia.", "practica medida de anestesiologia.", "practica media de anestesiologia.", "practica medicina de anestesiologia."
"clinicas mexicanas de anestesiologia." » "clinicas mexicana de anestesiologia.", "clinicas mexicano de anestesiologia.", "clinicas mexicana en anestesiologia.", "clinica mexicanas de anestesiologia.", "clinical mexicanas de anestesiologia.", "cronicas mexicanas 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: (("clinicas mexicanas de anestesiologia.") or ("practica medica de anestesiologia."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("clinicas mexicanas de anestesiologia.") OR ("practica medica de anestesiologia.")).
• Removing quotes may allow a broader search: (( clinicas mexicanas de anestesiologia. ) or ( practica medica de anestesiologia. )).
• Adding a wildcard symbol may retrieve word variants: (("clinicas mexicanas de anestesiologia.") or ("practica medica de anestesiologia."))*.