If you are talking about the super simple oscillator there are a few threads.
TLDR; is usually just that you need to find the right transistor to get the oscillation. So try a bunch of them and see if that helps. 
If you are talking about the super simple oscillator there are a few threads.
TLDR; is usually just that you need to find the right transistor to get the oscillation. So try a bunch of them and see if that helps.