...năm, bạn sẽ sử dụng cú pháp sau:
`` `
Tran Van Nam
01/01/1990
123456789
100000000
10
`` `
## hashtags
* #Viettel
* #ViettelPost
* #Vietteltelecom
* #Viettelfinance
* #ViettelHealth
* #ViettelInsurance
=======================================
## Need a brief syntax of Viettel services
**1...