Perhaps you should try some spelling variations:
investigacion cientificas » investigacion cientifica (Expand Search), investigaciones cientificas (Expand Search), investigacion cientifico (Expand Search)
politicas comparadas » politica comparada (Expand Search), politicos comparados (Expand Search), publicas comparadas (Expand Search)
consejo superior » ensino superior (Expand Search)
de investigacion » la investigacion (Expand Search)
de politicas » de politica (Expand Search), las politicas (Expand Search)
superior de » superior del (Expand Search)
unidad de » comunidad de (Expand Search)