YOU SAID:

I do not know that there are things I may know

INTO JAPANESE

私は私が知っているかもしれないものがあることを知りません

BACK INTO ENGLISH

I do not know that there are things that I might know

INTO JAPANESE

私は私が知っているかもしれないものがあることを知りません

BACK INTO ENGLISH

I do not know that there are things that I might know