YOU SAID:

I am not of the understanding of this things presented in the front of myself.

INTO JAPANESE

私は自分の目の前に提示されたこの事柄を理解していません。

BACK INTO ENGLISH

I do not understand this matter that is presented before me.

INTO JAPANESE

私は目の前に提示されたこの問題を理解していません。

BACK INTO ENGLISH

I don't understand this problem presented before me.

INTO JAPANESE

私は目の前に提示されたこの問題を理解できません。

BACK INTO ENGLISH

I cannot understand this problem presented before me.

INTO JAPANESE

私は目の前に提示されたこの問題を理解できません。

BACK INTO ENGLISH

I cannot understand this problem presented before me.