syntax error: select * from sanpham where (idDM = muc/videos or idDM in (select idDM from danhmuc where cap1 = muc/videos) or idDM in (select idDM from danhmuc where dmCha = muc/videos) or idDM in (select idDM from danhmuc where dmCha in (select idDM from danhmuc where cap1 = muc/videos))) order by idSP DESC