[Koha] Display output is not in order

Hello everybody, We have: OpacdefaultSortField/OpacdefaultSortOrder set to: A-Z (also we changed to ascendet) But when you enter in our OPAC (try it: www.catalogoenlinea.bijrd.gob.do), and type letter, A and try to search: this is the result: Ñam: el ñadu gloton... Ícaro... Églogan... El entre nosotros... Álbum And so on After some others titles, the order is missed again. We have changed the /etc/koha/zebradb/etc/word-phrase-utf.chr file in order to "map aÁ.. etc In help, pls? Thanks -- *Luis Moisés Rojas P.*