Perhaps you should try some spelling variations:
dung xiaoping » wang xiaoping, huang xiaoting, huang xiaoming
wuhan china » tuan china, yunnan china
yeon chang » yeo chang, joon chang, leone change
yuan chang » yuan cheng, huang chang, han chang
china lee » china led, ching lee, china sleep
lee seung » lee seungho, lee sepang, lee kyung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dung xiaoping) or (deng xiaoping)) wuhan china lee seung ((yeon chang) OR (yuan chang)) hari ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dung xiaoping) OR (deng xiaoping)) wuhan china lee seung ((yeon chang) OR (yuan chang)) hari ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dung xiaoping) or (deng xiaoping)) wuhan china lee seung ((yeon chang) OR (yuan chang)) hari ;*".