In this paper, we establish some new oscillation criteria for the functional differential equations of the form $frac{d}{dt}$$frac{1}{a_{n-1}(t)}$$frac{d}{dt}(frac{1}{{a_{n-2}(t)}frac{d}{dt}(...(frac{1}{a_1(t)}frac{d}{dt}x(t))...)))^alpha$ + $delta[f_1(t,s[g_1(t)],frac{d}{dt}x[h_1(t)])$ + $f_2(t,x[g_2(t)],frac{d}{dt}x[h_2(t)])]=0$ via comparing it with some other functional differential equations whose oscillatory behavior is known.