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

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