Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
than china » tuan china, han china, can china
han chang » huang chang, than change, can change
wing yan » wang yan, wing ian, wing tan
yan hua » tan hua, ya hua, wang hua
chang a » chang ha, chang _, chang c
a cong » a cone, a conger

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing yan ((yan hua) or (((than china) or (wuhan china)))) han chang a cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((yan hua) OR (((than china) OR (wuhan china)))) han chang a cong shu ;.
• Adding a wildcard symbol may retrieve word variants: wing yan ((yan hua) or (((than china) or (wuhan china)))) han chang a cong shu ;*.