Ch\u1ee7 t\u1ecbch H\u00e0 N\u1ed9i: Chi\u1ec1u 28\/2 s\u1ebd quy\u1ebft \u0111\u1ecbnh h\u1ecdc sinh \u0111i h\u1ecdc hay ngh\u1ec9 ti\u1ebfp<\/a><\/blockquote><\/iframe>