Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
tuan hua » tuan vu, yuan hui
pang jiu » pang jun, yang jie, yang jin
long shu » cong shu, tong shui, long du
tan hua » wang hua, tan chia, tan puay
yan jiu » yang jie, yang jin
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan ((((tan hua) or (tuan hua))) or (than china)) ren ((yan jiu) or (pang jiu)) long shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((((tan hua) OR (tuan hua))) OR (than china)) ren ((yan jiu) OR (pang jiu)) long shu ;.
• Adding a wildcard symbol may retrieve word variants: wang yan ((((tan hua) or (tuan hua))) or (than china)) ren ((yan jiu) or (pang jiu)) long shu ;*.