Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
chen zhen » chen zhe
zhen hong » zhen yong, zheng rong, zhen zhang
yang xie » yang xi, yang jie, yang di
kong seo » hong seo, kong sek, kong lee
yu chen » yu cheng, yi chen, yulu chen
xie yu » xin yu, xue yu
sar » sara, star, saur

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang xie yu chen zhen hong ((kong seo) or (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang xie yu chen zhen hong ((kong seo) OR (kong sar)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yang xie yu chen zhen hong ((kong seo) or (kong sar)) ;*.