Perhaps you should try some spelling variations:
prestamos » prestados, estamos, prestado
presentamos » presentadas, presentacion, presentation
presentados » presentadas, presentando, presentacion, presentas, presentans, presenteds
presentaron » presentacion, presentation, presentan
presentada » presenta, presentan, presented
presentado » presenta, presentan, presented

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