Perhaps you should try some spelling variations:
presenteds » presented, presentes, presentees
presentaron » presentacion, presentation, presentarse
presentan » presenta, presente, present
presentadas » presentas, presenteds, presentars
presentada » presenta, presented, presentar
presentado » presenta, presented, presentar

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: (presentadas OR ((presenteds OR ((presentaron OR presentan) OR presentada)) OR presentado))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(presentadas or ((presenteds or ((presentaron OR presentan) or presentada)) or presentado))~".
• Adding a wildcard symbol may retrieve word variants: (presentadas or ((presenteds or ((presentaron OR presentan) or presentada)) or presentado))*.