Perhaps you should try some spelling variations:
rol{acute}proactiva » rol{acute}proactivas, rol{acute}proactivo, rol{acute}practiva, rol{acute}peroactiva, rol{acute}profactiva
prod{acute}cticas » proud{acute}cticas, prof{acute}cticas, prol{acute}cticas, prod{acute}acticas, prod{acute}icticas, prod{acute}eticas, perod{acute}cticas, profd{acute}cticas
pro{acute}actica » pero{acute}actica, prof{acute}actica, pro{acute}tactica, pro{acute}lactica, pro{acute}activa
proffd{acute}latina » peroffd{acute}latina, profffd{acute}latina, proffd{acute}latin

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: ((rol{acute}proactiva OR prod{acute}cticas) OR (pro{acute}actica OR proffd{acute}latina)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((rol{acute}proactiva or prod{acute}cticas) or (pro{acute}actica or proffd{acute}latina)) ;*.