Code reads oxygen sensor left and right

[rayford]

To start with the last couple of months when the weather was colder if I would just start the car and take off, a lot of the time it would lose power and in one case it died on the highway but it did finely restart and after a while it took off to running as it normally did. Then since that time it has warmed up and I haven't noticed that so much but then yesterday morning I started it just fine and then it seemed to miss or cut out anytime I was just above an idle until I got it up to speed, not real bad but it was jerky like a dirty injector or intermittent missfiring, I put some good grade injector cleaner in and it seemed to help a little but it is still doing it some today. So I read the codes and it came up with 28,32 and 37, If I read that right it is both oxygen sensors and the left side knock sensor, it seems unlikely to me that both O2 sensors would go out at the same time and I am guessing that they are reading that way because of too much unburned fuel, do you think the knock sensor is causing the problem or something causing the knock sensor to go read bad? I did try to clear the codes as described in a different post on here and they didn't clear, if the problem isn't fixed would it clear and just re store the codes or will they come back immediately?
Thanks Vernon