Mo^.t so^' link ba`i ha't trong forum cu?a chu'ng ta thuo^.c ha`ng free ne^n hay bi. ho?ng giu+~a chu+?ng. Do ddo' mo.i ngu+o+`i co' the^? va`o topic na`y dde^? tho^ng ba'o link die. thienkhanh se~ chi?nh link la.i trong tho+`i gian so+'m nha^'t. thanks