Perhaps you should try some spelling variations:
presentan » presente, presentacion, presenten, presentean
presented » presente, presenteed
presenta » presente, presentea
presentaba » presenteba, presentaban, presentada, presentara, presenteaba
presentar » presenter, presentarse, presente, presents, presentear
presenteaban » presentaban, presentaran, presenciaban, presenteeaban
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: (presentan OR (((presented OR presenta) OR ((presenteaban OR presentaba) OR presentar)) OR present))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(presentan or (((presented OR presenta) or ((presenteaban or presentaba) or presentar)) or present))~".
• Adding a wildcard symbol may retrieve word variants: (presentan or (((presented OR presenta) or ((presenteaban or presentaba) or presentar)) or present))*.