Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
chang wong » chang won, change long, change hong
dong yang » dong hoang, dan yang, dong jung
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
rene yuan » meng yuan
hua rene » hua ren, juan rene
wong yue » wang yue, hong yu

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

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