Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
wang yuhan » wang luhang, wang yan, wang yidan
yuhan ming » yuan ming, chan ming
than china » tuan china, han china, wuhan china
zhang ming » zhang xin
liang sun » liang dan, liang tan, wing sun
cong sun » cong shu, cong van, wing sun

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhan ming than china zhang ming ((cong sun) or (liang sun)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan ming than china zhang ming ((cong sun) OR (liang sun)) ;*.