Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, xuan thang
han chang » huang chang, than change, can change
rene wang » wen wang
tuan hua » tuan vu, yuan hui
wang qin » wang lin, wang qiao, wang jing
qin wong » qing long, kie wong
wong yue » wang yue, hong yu
tan hua » wang hua, tan chia, tan puay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan chang) OR (han chang)) ((tan hua) or (tuan hua)) rene wang qin wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan chang) OR (han chang)) ((tan hua) OR (tuan hua)) rene wang qin wong yue ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan chang) OR (han chang)) ((tan hua) or (tuan hua)) rene wang qin wong yue ;".
• Adding a wildcard symbol may retrieve word variants: ((yuan chang) OR (han chang)) ((tan hua) or (tuan hua)) rene wang qin wong yue ;*.