var textarea = document.getElementsByClassName('form-control');
textarea[8].value = 'Anh_copy_noi_dung_tieu_su_vao_day';
textarea[9].value = 'Anh_copy_luat_cuop_IC_vao_day';
textarea[10].value = 'Anh_copy_luat_MG_PG_vao_day';