Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
than china » tuan china, han china, wuhan china
wei yang's » yiwei wang's
yan liang » yang liang, wang liang, you liang
china wei » china west, china wuxi, china who
3 longer » _ longer, 2 longer, a longer
3 langer » 3 lange, 2 langere, b langere

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 wei yang's ((3 longer) OR (3 langer)) a ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan liang) or (yang guang)) than china wei yang's ((3 longer) OR (3 langer)) a ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan liang) or (yang guang)) than china wei yang's ((3 longer) OR (3 langer)) a ;*.