Perhaps you should try some spelling variations:
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
chen hadi » chen hao
khan hadi » khan hafiz
wang ban » wang yan, wang dan, bang bang
hua wang » hwa wang, hua jiang, yuan wang
tan hua » tuan hua, wang hua, tan chia

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang ban)) tan hua wang yang di ((chen hadi) OR (khan hadi)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (wang ban)) tan hua wang yang di ((chen hadi) OR (khan hadi)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang ban)) tan hua wang yang di ((chen hadi) OR (khan hadi)) ;*.