Perhaps you should try some spelling variations:
asociacion iniciativa » asociacion ilicita (Expand Search), asociacion ilitica (Expand Search), regulacion iniciativa (Expand Search)
iniciativa 5 » iniciativa e (Expand Search), iniciativa de (Expand Search), iniciativa en (Expand Search)
5 estudios » 15 estudios (Expand Search), y estudios (Expand Search), 1 estudios (Expand Search)