Perhaps you should try some spelling variations:
gang thang » gung thang, nang trang, tang tang
tuan china » wuhan china, can china, taiwan china
han china » hang china, than china, can china
yang wang » yan wang, yang guang, yang liang
yang yang » wang yang, wang yan
wen wang » wei wang, chen wang, weng fang

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: gang thang ((han china) OR (tuan china)) wen wang ((yang wang) OR (yang yang)) hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "gang thang ((han china) or (tuan china)) wen wang ((yang wang) OR (yang yang)) hui ;~".
• Adding a wildcard symbol may retrieve word variants: gang thang ((han china) or (tuan china)) wen wang ((yang wang) OR (yang yang)) hui ;*.