Perhaps you should try some spelling variations:
presentado » presentan, presentacion, presentedo
presented » presente, present, presentan
presentaron » presentacion, presentation, presentan, presentanon, presentarseon, presenteon, presenteron
presentane » presentan, presentare, presentant, presentene
presentar » presentan, presentarse, presente, presenter
presenta » presente

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((presentado OR presented) OR ((presentaron OR (presentane OR presentar)) OR presenta))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((presentado OR presented) or ((presentaron or (presentane or presentar)) or presenta))~".
• Adding a wildcard symbol may retrieve word variants: ((presentado OR presented) or ((presentaron or (presentane or presentar)) or presenta))*.