Perhaps you should try some spelling variations:
"clinical mexicanas en anestesiologia. ;" » "clinicas mexicanas en anestesiologia. ;", "clinical mexicanas de anestesiologia. ;", "clinical mexicana en anestesiologia. ;", "clinical mexicanos en anestesiologia. ;", "clinical mexicano en anestesiologia. ;"
"clinical medicine en anestesiologia. ;" » "clinical medicine de anestesiologia. ;", "clinical medicina en anestesiologia. ;", "clinical medicinal en anestesiologia. ;", "clinical medicine _ anestesiologia. ;"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("clinical mexicanas en anestesiologia. ;") OR ("clinical medicine en anestesiologia. ;"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"clinical mexicanas en anestesiologia. ;\") OR (\"clinical medicine en anestesiologia. ;\"))".
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• Adding a wildcard symbol may retrieve word variants: (("clinical mexicanas en anestesiologia. ;") OR ("clinical medicine en anestesiologia. ;"))*.