Fluent in Vietnamese?

My Husbands Grandmother is now living with us.
She doesn't speak any English, and my Vietnamese isn't so great.
If you could kindly translate the following words into Vietnamese with
the correct punctuation, I would appreciate it :) thank you.

The words are:
Start-
Hot-
Cold-
Off/Stop-

How do you say vietnamese cooking in vietnamese?

Well the thing is that I'm looking up vietnamese recipes for my grandmother,and right now I'm lookin getting them up on youtube.com.I need to know how to say vietnamese food in vietnamese so i can look up these recipes.Plus my Grandma can only speak vietnamese,therefore the videos i look up have to be all in vietnamese.

alright thanks.