Perhaps you should try some spelling variations:
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"clinicas mexicana en medicina internet ;" » "clinicas mexicana en medicina interna ;", "clinicas mexicana en mediante internet ;", "clinicas mexicana en medicina integral ;", "cronica mexicana en medicina internet ;", "climatica mexicana en medicina internet ;", "clinical medicine en medicina internet ;", "clinicas mexicana de medicina internet ;", "clinicas mexicana la medicina internet ;"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("clinicas mexicanas de medicina internet ;") OR ("clinicas mexicana en medicina internet ;"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"clinicas mexicanas de medicina internet ;\") OR (\"clinicas mexicana en medicina internet ;\"))".
• Removing quotes may allow a broader search: (( clinicas mexicanas de medicina internet ; ) OR ( clinicas mexicana en medicina internet ; )).
• Adding a wildcard symbol may retrieve word variants: (("clinicas mexicanas de medicina internet ;") OR ("clinicas mexicana en medicina internet ;"))*.