Perhaps you should try some spelling variations:
yang yang » wang yang
hong than » hong tan, long thanh, hong hai
yang yao » yang yi, yang fan
yang hua » wang hua, yang hui, yang jui
ying hua » ming hua, wang hua, ying zhu
yang tan » yang fan, yang dean, liang tan
wang » wing, wan, lang

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

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