name:vi-hani → name:vi-Hani để tuân theo BCP 47 và thống nhất với các chìa khóa các như name:zh-Hant
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Hosting is supported by UCL, Bytemark Hosting, and other partners.
You are either using a browser that does not support JavaScript, or you have disabled JavaScript.
OpenStreetMap uses JavaScript for its slippy map.
