We search for dark photon $A^\prime$ and the dark Higgs boson $h^\prime$ particles that are suggested in number of recently proposed dark sector models. We present our search results in the production of $e^+e^- \rightarrow A^\prime h^\prime$ with the decay mod of $h^\prime \rightarrow A^\prime A^\prime$. The search was carried out in both inclusive and exclusive modes. We also discuss a search for new dark vector gauge boson that couples to light quark predominantly.