Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
zhang boon » chang soon, cheng boon, zhang boyang
boon siong » soon siong, boon chong
wang yang » wang liang, wang yanling
hua china » eu china, a china, era china
siong seo » hong seo
gang yao » yang yao, ganga ya, sang yoo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yan) or (((gang yao) or (wang yang)))) wang hua china zhang boon siong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yan) OR (((gang yao) OR (wang yang)))) wang hua china zhang boon siong seo ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (((gang yao) or (wang yang)))) wang hua china zhang boon siong seo ;*.