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