Perhaps you should try some spelling variations:
confederacion o » consideracion a (Expand Search), consideracion de (Expand Search), consideracion al (Expand Search)
euskal herria » euskal herriko (Expand Search)
ikastolas de » ikastolas y (Expand Search), ikastola edo (Expand Search)
o ikastolas » las ikastolas (Expand Search)
de euskal » de euskadi (Expand Search), en euskal (Expand Search)