Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
yuan kang » yuan wang, chan kang, yuan kai
tuan hua » tuan vu, yuan hui
rene yan » ren yan, see yan
rene ten » nine ten
tan hua » wang hua, tan chia, tan puay
cong » congo, long, hong

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

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