Perhaps you should try some spelling variations:
presented » presente, present, presentan
presentecion » presentacion, presentacione, apresentacion
presentada » presentado, presentan, presenteda
presentara » presentarse, presentaron, presentadas, presentana, presentarsea, presentea, presentera
presentar » presentan, presentarse, presente, presenter
presenta » presente

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

• Performing a fuzzy search may retrieve terms with similar spellings: (presented or (((presentecion or presentada) or (presentara OR presentar)) or presenta))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (presented OR (((presentecion OR presentada) OR (presentara OR presentar)) OR presenta))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(presented or (((presentecion or presentada) or (presentara OR presentar)) or presenta))*".