Perhaps you should try some spelling variations:
presentan » presenta, presente, presentacion, presentean, presentaan
presentes » presente, presented, presents, presentees, presentaes
presentees » presentee, presente, presented, presenteees, presentaees
presentaban » presentada, presentadas, presentacion, presenteaban, presentaaban
presentaron » presentacion, presentation, presentarse, presentearon, presentaaron
presentear » presentar, presenter, presente, presenteear, presentaear
present » presente, presenta

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (presentan or (((presentes or presentees) or ((presentaban OR presentaron) or presentear)) or present))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (presentan OR (((presentes OR presentees) OR ((presentaban OR presentaron) OR presentear)) OR present))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(presentan or (((presentes or presentees) or ((presentaban OR presentaron) or presentear)) or present))*".