Perhaps you should try some spelling variations:
than china » han china, wuhan china, can china
tuan china » wuhan china, can china, taiwan china
wang yang » wang yan, wang liang, wang yanling
dong yang » dong hoang, yang yang, dan yang
west kan » west can, west bank, west jean
min wong » min hong, minh cong, amin hong
wong yue » wang yue, hong yu
kan min » han min, kian ming, kyaw min

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (dong yang)) ((than china) OR (tuan china)) west kan min wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (dong yang)) ((than china) OR (tuan china)) west kan min wong yue ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (dong yang)) ((than china) OR (tuan china)) west kan min wong yue ;".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (dong yang)) ((than china) OR (tuan china)) west kan min wong yue ;*.