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 mexicana en anestesiologia ;" » "clinicas mexicanas en anestesiologia ;", "cronica mexicana en anestesiologia ;", "climatica mexicana en anestesiologia ;", "clinicas mexicana 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 mexicana en anestesiologia ;") or ("colonias americanas de anestesiologia ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("clinicas mexicana en anestesiologia ;") OR ("colonias americanas de anestesiologia ;")).
• Removing quotes may allow a broader search: (( clinicas mexicana en anestesiologia ; ) or ( colonias americanas de anestesiologia ; )).
• Adding a wildcard symbol may retrieve word variants: (("clinicas mexicana en anestesiologia ;") or ("colonias americanas de anestesiologia ;"))*.