Doan, Gia Bao Ngoc, Minh Quan Luu, Thi Thanh Ha Truong, Duc Minh Tan Nguyen, Thi Minh Huyen Phan, and Duy Thanh Tran. 2025. “Building a New Hybrid Machine Learning Model for Improvement Insurance Cross-Sell Prediction”. HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE - ECONOMICS AND BUSINESS ADMINISTRATION 16 (1):93-111. https://doi.org/10.46223/HCMCOUJS.econ.en.16.1.4306.2026.