Perhaps you should try some spelling variations:
than china » han china, wuhan china, can china
tuan china » wuhan china, can china, taiwan china
daun yang » dan yang, du yang, tan yang
wang yang » wang yan, wang liang, wang yanling
jui kang » jin kang, jui meng, wu kang
kang hay » eang hay, kang han, dang hai

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 OR wing) hong ((than china) OR (tuan china)) ((daun yang) OR (wang yang)) jui kang hay ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wing) hong ((than china) OR (tuan china)) ((daun yang) or (wang yang)) jui kang hay ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wing) hong ((than china) OR (tuan china)) ((daun yang) or (wang yang)) jui kang hay ;*.