Perhaps you should try some spelling variations:
presented » presente, presenta, presenteed, presentaed
presentan » presenta, presente, presentacion, presentean, presentaan
presentaaron » presentaron, presentacion, presentation, presenteaaron, presentaaaron
presentara » presentada, presentarse, presentaron, presentaa, presentarsea, presentea, presenteara, presentaara
presentar » presenta, presentarse, presente, 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 (presentara OR presentar)) OR present))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((presented OR presentan) or ((presentaaron or (presentara or presentar)) or present))~".
• Adding a wildcard symbol may retrieve word variants: ((presented OR presentan) or ((presentaaron or (presentara or presentar)) or present))*.