Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
yang yang » wang yang, wang yan
yan yuan » yan guan, fang yuan, nan yan
hui jing » hui ping, hui ying, chui ling
ying run » being run, using run, long run
jing ji » ying jin
using r » using _, using a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (yan yuan)) ((wang hua) or (wuhan china)) hui jing ji ((ying run) or (using r)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yan yuan)) ((wang hua) OR (wuhan china)) hui jing ji ((ying run) OR (using r)) ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yan yuan)) ((wang hua) or (wuhan china)) hui jing ji ((ying run) or (using r)) ;*.