Tinh Tế
Tinh Te (stylized: Tinhte; Tinhte.vn) is an online forum established in 2006, considered one of the largest information technology forums in Vietnam. 
tinhte.vn
Trần Mạnh Hiệp, Đinh Hữu Tài
A private individual
Vietnam
https://vi.wikipedia.org/wiki/Tinh_T%E1%BA%BF
No - we would need to spontaneously reach out to the current owners/custodians
Unclear