Where does “phi công trẻ” come from?

phi công trẻ (Vietnamese) comes from Vietnamese trẻ, from Proto-Vietic k-lɛː.

Ancestry of “phi công trẻ”, step by step

phi công trẻ traces back through two separate lines of ancestry.

via Vietnamese trẻ

StepLanguageWordMeaning
1Vietnamesetrẻyoung; a child; young children; infants
2Proto-Vietick-lɛː

via Vietnamese phi công

StepLanguageWordMeaning
1Vietnamesephi côngpilot
2Chinese
Every word from Proto-Vietic k-lɛːEvery word from Vietnamese trẻ