Where does “hạt dẻ” come from?

hạt dẻ (Vietnamese) comes from Vietnamese hạt, from Chinese 核.

hạt dẻ (Vietnamese): chestnut

Definitions

Step	Language	Word	Meaning
1	Vietnamese	hạt	a small hard piece; a seed, a grain, a nut, etc;...
2	Chinese	核	—

hạt dẻ — Etymology, Origin & Word History | Etymology Explorer