This is a unique identifier. It may signify an individual. To decipher its meaning, we need further context. Perhaps it is associated with specific system. Investigating the where it came from of this identifier would be important. Truc Tiep Da Ga Thomo 2023 Thoi gian den tai/vào/cho đến ngay thang/ngày tháng/ngày/ 15/mười lăm/