translate please; " men mwen sa pou fe m ". my translator says " but i do this for me "

I wonder if the translator could not translate this because it's missing punctuation and an accent. Or maybe the "translator" (I assume it's a machine) translated it word for word.

Men mwen.  Sa pou w fè m?
Here I am.  What do you want of me? (or what do you want from me?)

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