DSpace Community: http://115.78.225.145:8081/dspace/handle/TVDT_123456789/10 Mon, 24 Aug 2026 05:08:41 GMT 2026-08-24T05:08:41Z DSpace Community: http://115.78.225.145:8081/dspace/retrieve/ef3c27ba-4857-4248-9142-71f619cdd5e0/9-TAI-NGUYEN.png http://115.78.225.145:8081/dspace/handle/TVDT_123456789/10