Perhaps you should try some spelling variations:
aproximacion economica » aproximacion critica (Expand Search), aproximacion teorica (Expand Search), aproximacion historica (Expand Search)
bizkaia departamento » gipuzkoa departamento (Expand Search), bogota departamento (Expand Search), euskadi departamento (Expand Search)
y aproximacion » una aproximacion (Expand Search)
de innovacion » la innovacion (Expand Search)
innovacion y » innovacion en (Expand Search)