do not know that I can communicate

do not know that I can communicate with you to understand what I am talking about.
ผลลัพธ์ (ภาษาอังกฤษ) 2:
I don't know that I'd be able to communicate, you have to understand what I say?.
ผลลัพธ์ (ภาษาอังกฤษ) 3:
I don't know that I can communicate to you understand what I said, do you.