Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yan
yang yang » wang yang, wang yan
gong thi » gong si, gong di, gong hui
dang thi » dang hai
yang xi » yang di, yang yi, yang jui
hong du » hong yu, long du, hong tou
yan li » yang li, yuan li, gan li

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

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