Perhaps you should try some spelling variations:
presentado » presentan, presented, presentar, presentedo, presenteado
presentaron » presentacion, presentation, presentan, presenteron, presentearon
presenta » presente, presentea
presentadasa » presentedasa, presentadas, presentada, presentados, presenteadasa
presentaba » presenteba, presentaban, presentada, presentara, presenteaba
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 presentaron) OR (((presenta OR presentadasa) OR presentaba) OR present))~.
• Adding a wildcard symbol may retrieve word variants: ((presentado or presentaron) or (((presenta or presentadasa) or presentaba) or present))*.