Perhaps you should try some spelling variations:
presented » presente, presenta, presenteed, presentaed
presentan » presenta, presente, presentacion, presentean, presentaan
presentaaron » presentaron, presentacion, presentation, presenteaaron, presentaaaron
presentarse » presentase, presentese, presentsse, presentearse, presentaarse
presentar » presenta, presente, presents, 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 presentan) OR ((presentaaron OR (presentarse OR presentar)) OR present))~.
• Adding a wildcard symbol may retrieve word variants: ((presented or presentan) or ((presentaaron or (presentarse or presentar)) or present))*.