Please help me in this .. tell me what is considered the best next step to cure blood cancer after the bone marrow transplant fails ..?

I am afraid, not man: Not many options , if one gets to this stage. However bone marrow trasplant can be repeated. If this is not possible, then you are at the mercy of some brand new phase 1 or phase 2 clinicla trials which are often running in major cancer centers like md anderson or sloan kettering cancer center. Fred hutchinson cancer center in seattle is another well known place to search for any good options ther.