Search for Psi(3770) Decays into non D-Dbar States

Using the world's current largest data sample of psi(3770) charmonium resonance taken by the CLEO-c detector operating at the Cornell Electron Storage Ring, we present new results on a search for psi(3770) decays into non D-Dbar states. We compare the results of the search with the predictions based upon the mixing models and the perturabtive QCD 12\% rule to provide a better understanding of many aspects of charmonia.