Where does “Tơ-roa” come from?

Tơ-roa (Vietnamese) comes from French Troie, from Latin Trōia, from Ancient Greek Τροία — Troy.

Tơ-roa (Vietnamese): Troy

Definitions

Step	Language	Word	Meaning
1	French	Troie	—
2	Latin	Trōia	—
3	Ancient Greek	Τροία	Troy

Tơ-roa — Etymology, Origin & Word History | Etymology Explorer