English version C%EF%BF%BD%EF%BF%BDc%20giai%20%EF%BF%BD%EF%BF%BDo%EF%BF%BD%EF%BF%BD%EF%BF%BDn%20l%EF%BF%BD%EF%BF%BD%EF%BF%BDch%20s%EF%BF%BD%EF%BF%BD%EF%BF%BD X%EF%BF%BD%EF%BF%BDc%20su%EF%BF%BD%EF%BF%BD%EF%BF%BDt