Perhaps you should try some spelling variations:
wang gan » wang yan, wang dan, wang yang
dan yang » daun yang, wang yang, yang yang
kim song » kim young, kim eung
tan yang » tan ying, tan yong, tao yang
guan hua » tuan hua, gui hua, tan hua
wang ban » wang yan, wang dan, wang yang
li rong » yi rong, li cong, li song

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: ((wang gan) OR (wang ban)) guan hua ((dan yang) OR (tan yang)) ((li rong) OR (kim song)) hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang gan) OR (wang ban)) guan hua ((dan yang) or (tan yang)) ((li rong) or (kim song)) hai ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang gan) OR (wang ban)) guan hua ((dan yang) or (tan yang)) ((li rong) or (kim song)) hai ;*.