syntax error: select * from sanpham where (idDM = internet or idDM in (select idDM from danhmuc where cap1 = internet) or idDM in (select idDM from danhmuc where dmCha = internet) or idDM in (select idDM from danhmuc where dmCha in (select idDM from danhmuc where cap1 = internet))) or (idDM2 = internet or idDM2 in (select idDM from danhmuc where cap1 = internet) or idDM2 in (select idDM from danhmuc where dmCha = internet) or idDM2 in (select idDM from danhmuc where dmCha in (select idDM from danhmuc where cap1 = internet))) order by vitri, idSP DESC