I've almost succeeded.
3 seconds sound clip from the Of Cooks And Kung Fu (1979) movie soundboard.
You can hear this line at 01:22:50 in the Blu-ray version of the movie.
Quote context
[...]
- Well, son, the wound on your uncle's neck is identical to the one that killed your parents.
- You mean this man with the hat, he killed my uncles, do you know why?
- No, son, I don't really know why.
- I'll make him pay for these murders.
- Do you remember his kung fu technique?
- I do.
- That will be useful. Copy his style when you attack. He will not expect it.
- But remember this: Don't let him get near you, don't let him get to your throat.
- Dad, mom, if you're listening please guide me. Help me find this merciless killer.
- Been a long time, you remember me? I've been searching for you for 20 years.
- We once worked together in the palace kitchen.
[...]