  Taking into account the contributions of the quark-quark, quark-gluon, and
gluon-gluon condensate corrections, the strong form factors and coupling
constants of $D^*_{s0}D^*_0K^*$, $D_sDK^*$, $D^*_sD^*K^*$, $D_{s1}D_1K^*$,
$D_sD^*K^*$, and $D_{s0}D_1K^*$ vertices are investigated within the
three-point QCD sum rules method, without and with the $SU_{f}(3)$ symmetry.
