Perhaps you should try some spelling variations:
chang hadi » chang ha, shang hai, change hands
wang yong » wang yang, wang hyoung, wang yan
khan hadi » khan hafiz
yan yuan » fang yuan, nan yan, yan clan
yan guan » gan guan, yang guang, yihan guan
yao ying » yao yang, gao ying, fan ying
ying jin » yang jin, jing ji, yang jie

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong ((yan yuan) OR (yan guan)) yao ying jin ((chang hadi) OR (khan hadi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong ((yan yuan) or (yan guan)) yao ying jin ((chang hadi) or (khan hadi)) ;*.