Perhaps you should try some spelling variations:
yang gong » yaping gong, yang guang, yang yang
gang gong » gongs gong, gang sung, gong gang
meng yuan » meng hsuan, fang yuan, feng juan
yuan wang » yan wang, yuan kang, yuan chang
chan kang » chung kang, chan eng, chan fong
yuan dan » yuan kang, yuan kai, yuan lin
dan yang » daun yang, tan yang, wang yang

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 gong) OR (gang gong)) meng yuan dan yang ((yuan wang) OR (chan kang)) hay ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang gong) OR (gang gong)) meng yuan dan yang ((yuan wang) or (chan kang)) hay ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang gong) OR (gang gong)) meng yuan dan yang ((yuan wang) or (chan kang)) hay ;*.