Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
wang yang » wang yan, wang liang, wang yanling
roa yuan » roa juan, from yuan
yang lin » yang jin, wang lin, yang li
keong su » jeong su
yang yi » yang xi, yang jui
rong su » rong yu, cong sun, jeong su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yi) or (yang di))ng roa yuan wang yang lin ((keong su) OR (rong su)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yi) OR (yang di))ng roa yuan wang yang lin ((keong su) OR (rong su)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yi) or (yang di))ng roa yuan wang yang lin ((keong su) OR (rong su)) ;*".