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