Perhaps you should try some spelling variations:
presentation » presentacion, presentetion, presenteation
presentado » presented, presentar, presentacion, presentedo, presenteado
presentan » presente, presentacion, presenten, presentean
presenteacion » presentacion, presentacio, presentacin, presenteeacion
presenta » presente, presentea
present » presente

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

• Performing a fuzzy search may retrieve terms with similar spellings: (presentation or ((presentado or (presentan or presenteacion)) or (presenta or present)))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (presentation OR ((presentado OR (presentan OR presenteacion)) OR (presenta OR present))).
• Adding a wildcard symbol may retrieve word variants: (presentation or ((presentado or (presentan or presenteacion)) or (presenta or present)))*.