NEED HELP WITH PAIN

This question is for the nurses and basically anyone that can help me.  I live in England and was first diagnosed with cancer 6 yrs ago.  I am now terminal, and the cancer is in the bone in my right leg.  I know that treating bone pain is notoriously hard, and I would like to ask the nurses and anyone else who might read this if there is anything that I can try that actually WORKS.  The morphine helps a little bit, but not much.  If there is anyone that can help me, I would be very grateful.  Thank you.