Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
wang yang » wang liang, wang yanling
wang ping » wang jing, wang ning, wang peng
tuan hua » tuan vu, yuan hui
wen wang » wei wang, chen wang, weng fang
pong yan » dong yang, kong yam, fong yin
tan hua » wang hua, tan chia, tan puay

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

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