Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
yang yang » wang yang, wang yan
tong shui » cong shu, gong hui
yuan kai » yuan kang, yuan fei, tan kai
tong hui » wang hui
tao hua » tan hua, tuan hua
yan min » han min, kan min, yang mind

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 yang) OR (yuan kai)) ((tao hua) OR (than china)) ren yan min ((tong shui) OR (tong hui)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (yuan kai)) ((tao hua) or (than china)) ren yan min ((tong shui) OR (tong hui)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yuan kai)) ((tao hua) or (than china)) ren yan min ((tong shui) OR (tong hui)) ;*.