Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
yan yuan » yan guan, fang yuan, nan yan
zi cheng » xi cheng, _ cheng, yi chen
xin song » jin song, xin tong, ein sog
kim song » kim young, kim eung
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 cheng zhang ((xin song) OR (kim song)) (shin or thin) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yuan zi cheng zhang ((xin song) OR (kim song)) (shin OR thin) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yuan zi cheng zhang ((xin song) OR (kim song)) (shin or thin) ;*".