Ch\u01b0\u01a1ng 2 – B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m Gi\u1ea3i t\u00edch 12: H\u00e0m s\u1ed1 m\u0169 v\u00e0 h\u00e0m s\u1ed1 l\u00f4garit – Ph\u1ea7n 4<\/a><\/blockquote><\/iframe>