... [1]). G9i cac gia tu trong cling mot lap phan hoach la dong mire,changhan trong tiengAnh Approximately, Possibly, Not sola cac gia tu dongmire. Gia thietr~ng so lapphan hoach trong H-vaH+bangnhauva ... chuyen gia tu trong [7,8].VIvay chung ta se m60 rong cac qui titc chuyen gia tu trong [7,8] vadirara mot so quititc suy dien moi nhir thay the gia tu- dong mire, phan ti 1~,nharn giai quyet ... gia tt'r. Chang han(iung,nit(iung, khOng (iungliim, sai, rat sai,khOngsai liim la cac gia tri chan ly diroc sinhra tu khai niern(iung,sai boi cac gia tt'r rat,khOng Xet gia...