Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
chang won » chang soon, chang ann, chang min
tuan hua » tuan vu, yuan hui
ren yuan » ren yan, meng yuan, wei yuan
tan hua » wang hua, tan chia, tan puay
won shu » wong shiu, cong shu, wong sau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (wang yang)) ((tan hua) or (tuan hua)) ren yuan chang won shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang yang)) ((tan hua) OR (tuan hua)) ren yuan chang won shu ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang yang)) ((tan hua) or (tuan hua)) ren yuan chang won shu ;*.