Perhaps you should try some spelling variations:
presentado » presentan, presented, presentedo, presenteado
presenta » presente, presentea
presentaron » presenteron, presentation, presentan, presentarse, presentanon, presentarseon, presenteon, presentearon
presentacion » presentecion, presenteacion
presentar » presenter, presentan, presentarse, presente, presentear
presenteado » presented, presentada, presentando, presenteeado
presenten » presente, presentan, presented, presenteen
present » 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 presenta) OR presenteado) OR (((presentaron OR presentacion) OR (presenten OR presentar)) OR present))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((presentado or presenta) or presenteado) or (((presentaron OR presentacion) or (presenten or presentar)) or present))~".
• Adding a wildcard symbol may retrieve word variants: (((presentado or presenta) or presenteado) or (((presentaron OR presentacion) or (presenten or presentar)) or present))*.