Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
chen zhang » zhen zhang, chen zheng, chen shuang
yan yuan » yan guan, fang yuan, nan yan
fan wong » fan along, fan cone, fan xing
wong siu » wong shiu, kong siu, wong sau
yuan zi » yan zi, yuan li, yuan fei
wang » wing, wan, lang

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 yuan zi ((chen zhang) OR (cheng zhang)) fan wong siu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yuan zi ((chen zhang) OR (cheng zhang)) fan wong siu ;*".