Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
yang guang » yang yang, yan guan, yang liang
than china » tuan china, han china, can china
wei yang's » yiwei wang's
yan liang » yang liang, wang liang, you liang
a longer » _ longer, 2 longer, 3 longer
longer a » longer _

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: ((yan liang) OR (yang guang)) ((than china) OR (wuhan china)) wei yang's a longer a ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan liang) or (yang guang)) ((than china) OR (wuhan china)) wei yang's a longer a ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan liang) or (yang guang)) ((than china) OR (wuhan china)) wei yang's a longer a ;*.