Perhaps you should try some spelling variations:
roductividad cientifica » productividad cientifica
actividades cientificas » habilidades cientificas, actitudes cientificas, actividades criticas
actividades creativas » actividades recreativas, actividades productivas, actividades realizadas
actividad cientifica » actitud cientifica, actividad citotoxica, calidad cientifica

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: ((roductividad cientifica) OR (((actividad cientifica) OR (((actividades cientificas) OR (actividades creativas))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((roductividad cientifica) or (((actividad cientifica) or (((actividades cientificas) OR (actividades creativas))))))~".
• Adding a wildcard symbol may retrieve word variants: ((roductividad cientifica) or (((actividad cientifica) or (((actividades cientificas) OR (actividades creativas))))))*.

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