  In this study, the coupling constant of $D^*_sD^*K^*$ and $D_{s1}D_1K^*$
vertices were determined within the three-point Quantum chromodynamics sum
rules method with and without consideration of the $SU_{f}(3)$ symmetry. The
coupling constants were calculated for off-shell charm and K$^*$ cases.
Considering the non-perturbative effect of the correlation function, as the
most important contribution, the quark-quark, quark-gluon, and gluon-gluon
condensate corrections were estimated and were compared with other predictive
methods.
