Hai cercato la traduzione di aweful da Inglese a Spagnolo

back test result is great but real trade is aweful...
volver resultado de la prueba es grande pero el comercio real es realmente malo.

however, those leaders who repeated their terms became such aweful experiences for the country that many political and social forces, who met to draft the constitution of 1991, decided that this mechanism should be prohibited.
sin embargo, fueron tan nefastas las experiencias de los mandatarios que repitieron sus periodos, que las diversas fuerzas políticas y sociales, convocadas para redactar la constitución de 1991, determinaron que este mecanismo debía prohibirse.