Perhaps you should try some spelling variations:
de responsabilidades » de responsabilidade (Expand Search), de responsabilidad (Expand Search), da responsabilidade (Expand Search)
responsabilidades en » responsabilidad en (Expand Search), responsabilidades de (Expand Search), responsabilidade do (Expand Search)
deberes humanos » deveres humanos (Expand Search), seres humanos (Expand Search), dederechos humanos (Expand Search)
en deberes » con deberes (Expand Search), y deberes (Expand Search), de deberes (Expand Search)