YOU SAID:

I dont know I have no clue

INTO JAPANESE

手がかりがないのかわからない

BACK INTO ENGLISH

I don't know if there are no clues

INTO JAPANESE

手がかりがないかわかりません

BACK INTO ENGLISH

I don't know if there are any clues

INTO JAPANESE

手がかりがあるかどうかわかりません

BACK INTO ENGLISH

I don't know if there are any clues