Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
cheng han » chen hao
ruiz qian » ruiz juan
qian wang » yiqian wang, qian rong, qian yan
wang yang » wang yan, wang liang, wang yanling
gong gang » hong gang, gong qiang, gongs gong
zhong tai » hong tan, hong hai, zhong zhi
han ruiz » han rui, sanz ruiz

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan cheng han ruiz qian wang yang ((gong gang) OR (zhong tai)) ;~".
• Adding a wildcard symbol may retrieve word variants: yuan cheng han ruiz qian wang yang ((gong gang) OR (zhong tai)) ;*.