Bishop Dominic Mary Hồ Ngọc Cẩn established the Sacred Heart Hospital in Bui Chu and assigned the Sisters of St. Paul to manage the hospital in 1945. He assisted the Department of Orphanages and the Common House Fund to rescue many victims of the famine at Bui Chu in At Dau (1945). He was also appointed as a supreme adviser as requested by the government of President Ho Chi Minh in 1945.