NII-UIT at VBS2025: Multimodal Video Retrieval with LLM Integration and Dynamic Temporal Search. - Bao Tran Gia; Tuong Bui Cong Khanh; Tam Le Thi Thanh; Thuyen Tran Doan; Khiem Le; Tien Do; Tien-Dung Mai; Thanh Duc Ngo; Duy-Dinh Le; Shin'ichi Satoh 001 (MMM (5), 2025)