Perhaps you should try some spelling variations:
presentado » presented, presentacion, presentedo
presentaron » presentacion, presentation, presentarse, presentarseon, presenteon, presenton, presenteron
presentane » presentare, presentant, presentase, presentee, presente, presentacione, presentene
presentan » presente, present, presentacion, presenten
presentar » presentarse, presente, present, 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 ((presentaron OR ((presentane OR presentan) OR presentar)) OR presenta))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(presentado or ((presentaron or ((presentane OR presentan) or presentar)) or presenta))~".
• Adding a wildcard symbol may retrieve word variants: (presentado or ((presentaron or ((presentane OR presentan) or presentar)) or presenta))*.