system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] In the course of looking for someone to fix his hands, why didn't Stephen Strange find Dr. Helen Cho and her regeneration chamber, Dr. Noah Burstein whose work on regeneration created Luke Cage, or any of the people affiliated with Project T.A.H.I.T.I.?
gpt
Most of the researchers are working in secret. 

T.A.H.I.T.I. is a classified Shield project involving alien technology. And Dr. Burstein's work involves illegal and unethical experiments on prisoners. If it's sanctioned by anybody then they're probably the shadier end of the military-industrial complex, and there's no indication Dr Strange has those kinds of connections.

I haven't quite got a sense of where that section of Dr Strange fits in the marvel timeline, but Dr Cho's work seems to still be experimental by the time of Age of Ultron. And by the end of that movie, her lab has blown up and many of her colleagues are dead, and she's gone to work for Shield. So if Stephen Strange did approach her before AoU, it's possible the technology wasn't yet capable of the high precision necessary to repair his hands.