Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
dang hung » dang cuong, fung hung, ming hung
chan ping » chen ping, chan ming, zhang ping
yang hua » wang hua, yang hui, ying hua
wang hui » wang hua, wang zhi, wang he
wang wei » zhang wei, wang zhi
yang xi » yang di, yang yi, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (yang xi)) ((yang hua) or (dang hung)) gene chan ping ((wang hui) OR (wang wei)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yang xi)) ((yang hua) OR (dang hung)) gene chan ping ((wang hui) OR (wang wei)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (yang xi)) ((yang hua) or (dang hung)) gene chan ping ((wang hui) OR (wang wei)) ;*".