  We establish the existence of solutions of fully nonlinear elliptic
second-order equations like $H(v,Dv,D^{2}v,x)=0$ in smooth domains without
requiring $H$ to be convex or concave with respect to the second-order
derivatives. Apart from ellipticity nothing is required of $H$ at points at
which $|D^{2}v|\leq K$, where $K$ is any given constant. For large $|D^{2}v|$
some kind of relaxed convexity assumption with respect to $D^{2}v$ mixed with a
VMO condition with respect to $x$ are still imposed. The solutions are sought
in Sobolev classes. We also establish the solvability without almost any
conditions on $H$, apart from ellipticity, but of a "cut-off" version of the
equation $H(v,Dv,D^{2}v,x)=0$.
