Perhaps you should try some spelling variations:
presented » presente, presenta, presentan, presenteed, presentaed
presentando » presentado, presentan, presentada, presenteando, presentaando
presentaron » presentacion, presentation, presentan, presentaon, presentanon, presentarseon, presentearon, presentaaron
presenten » presente, presentan, presentes, presenteen, presentaen
presentar » presenta, presentan, presentarse, presentear, presentaar
present » presente, presenta

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: ((presented OR presentando) OR ((presentaron OR (presenten OR presentar)) OR present))~.
• Adding a wildcard symbol may retrieve word variants: ((presented or presentando) or ((presentaron or (presenten or presentar)) or present))*.