Perhaps you should try some spelling variations:
xiaodong than » xiaotong zhang, xiaodong huang
china due » china does, china des, china den
sang minh » kang minah, anh minh, song min
minh dang » minh cong, mich dann
dang hadi » dang hai
china du » china des, china den, china 1
wang » wing, wan, lang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang xiaodong than ((china du) OR (china due)) sang minh dang hadi ;~".
• Adding a wildcard symbol may retrieve word variants: wang xiaodong than ((china du) OR (china due)) sang minh dang hadi ;*.