The films that you seek are currently controlled by Warner Brothers. It is believed that Warner will be releasing at least some of their Charlie Chan holdings on DVD in the future. Until then, all we can do is obtain copies from other collectors or from a number of "grey market" sellers. These copies will, of course, be of varying levels of quality. While we do not condone the sale of unauthorized material, sadly, that is virtually the only avenue available at this time, and we do list some of these sellers as a service to Chan fans. Again, none of the last 11 Charlie Chan movies of the series, a number which include all of the titles that you note, are currently available via authorized, quality, releases.
Yea I knew they weren't released yet, I personally don't care for the Roland Winters ones, only the Warner Oland and Sidney Toler titles. I was looking through these threads hoping to find what people thought was the best redistributer of these films is (quality wise). I have all the titles, I just want a better quality of the ones I mentioned above.