Perhaps you should try some spelling variations:
presentaban » presentaron, presentada, presentadas, presenteaban, presentaaban
presentan » presenta, presente, presentacion, presentean, presentaan
presentesen » presentes, presenten, presentee, presenteesen, presentaesen
presentaaan » presentaran, presentarian, presentaron, presenteaaan, presentaaaan
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: ((presentaban OR presentan) OR ((presentesen OR (presentaaan OR presentar)) OR present))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((presentaban OR presentan) or ((presentesen or (presentaaan or presentar)) or present))~".
• Adding a wildcard symbol may retrieve word variants: ((presentaban OR presentan) or ((presentesen or (presentaaan or presentar)) or present))*.