K\u00ednh ch\u00e0o to\u00e0n th\u1ec3 qu\u00fd h\u1ed9i vi\u00ean , h\u00f4m nay ch\u00fang ta s\u1ebd c\u00f3 c\u01a1 h\u1ed9i t\u00ecm hi\u1ec3u v\u1ec1 m\u1ed9t kh\u00e1i ni\u1ec7m kh\u00f4ng m\u1edbi nh\u01b0ng l\u1ea1i kh\u00e1 m\u01a1 h\u1ed3 v\u1edbi d\u00e2n ch\u01a1i \u0111\u1ec1 – \u0110\u00f3 ch\u00ednh l\u00e0 \u0110\u1ec0 B\u1ed8.<\/em><\/p>\n