Perhaps you should try some spelling variations:
xifang chen » zhigang chen
yan xifang » sun xifang, yan liang
wang qian » wang qiao, wang qin, wang liang
chuan ong » chuan bang
zhong zhi » zhang zhi, hong ghi, zhong tai
zhang wei » zhen wei
qian yan » qian jun, qian yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang qian yan xifang chen chuan ong ((zhong zhi) or (zhang wei)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang qian yan xifang chen chuan ong ((zhong zhi) OR (zhang wei)) ;.
• Adding a wildcard symbol may retrieve word variants: wang qian yan xifang chen chuan ong ((zhong zhi) or (zhang wei)) ;*.