Perhaps you should try some spelling variations:
presentadas » presentada, presentado, presentedas, presenteadas
presentasen » presentase, presentesen, presentadoen, presenteasen
presentaaan » presentaban, presentaran, presentarian, presenteaan, presenteaaan
presenta » presente, presentea
presentan » presenten, presente, presentacion, presentean
present » presente

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 ((presentasen OR ((presentaaan OR presenta) OR presentan)) OR present))~.
• Adding a wildcard symbol may retrieve word variants: (presentadas or ((presentasen or ((presentaaan or presenta) or presentan)) or present))*.