Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan chang, qian wang
yuan kang » yuan chang, chan kang, yuan kai
tuan hua » tuan vu, yuan hui
wei yuan » wei guang, wei aun, wei lun
yuan tan » huan t'an, yuan ting, tan tan
tan hua » wang hua, tan chia, tan puay
hong yu » wong yue

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan kang)) ((tan hua) OR (tuan hua)) wei yuan tan hong yu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (yuan kang)) ((tan hua) OR (tuan hua)) wei yuan tan hong yu ;~".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yuan kang)) ((tan hua) OR (tuan hua)) wei yuan tan hong yu ;*.