Perhaps you should try some spelling variations:
presented » presente, presentan, presenteed
presentaron » presentacion, presentation, presentan, presenteron, presentearon
presentearon » presentaran, presenciaron, presentacon, presenteearon
presentean » presentan, presenten, presenteen, presenteean
presentase » presentarse, presentare, presentas, presentese, presentease
presenta » presente, presentea
present » presente

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (presented or ((((presentaron OR presentearon) or presentean) or (presentase or presenta)) or present))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (presented OR ((((presentaron OR presentearon) OR presentean) OR (presentase OR presenta)) OR present))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(presented or ((((presentaron OR presentearon) or presentean) or (presentase or presenta)) or present))*".