Perhaps you should try some spelling variations:
dung xiaoping » deng xiaoping, wang xiaoping, huang xiaoting
xiaoping tuan » xinping guan
tuan china » wuhan china, can china, taiwan china
china den » chinas den, china des, china does
sang minh » kang minah, anh minh, song min
minh lang » minh cong, vinh long
den sang » den gang, den stand, den klang

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: dung xiaoping tuan china den sang minh lang (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: dung xiaoping tuan china den sang minh lang (hai or hari) ;*.