I'm trying to help my friend find an old friend she knew in Vietnam. Can anyone help me? Here's what I know:

His name: Bui-Cong Buu.
Her name: Phu Kim Anh.
Place: They knew each other in central Vietnam in a small town called: Tuy Hoa and Phu Yen.

He may live in Sydney now.

His brother: Bui Cong Thanh.
His sister: Bui Thi Sam.

In Tuy Hoa, her family had a coffee shop name Cafe Tung on Tran Hungdao Boulevard in Tuy Hoa in Vietnam.

Before 1975 (around 1971). Her family moved to big city Sai Gon (teo chi mint city now).