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