Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
than china » tuan china, han china, wuhan china
yang yang » wang yang, wang yan
yuan hui » jaan hui, tuan hua, yang hui
pei yang » wei yang, hui yang, pei yun
yang yao » wang yan, yang yi, yang fan
yao long » a long, so long, yao yang
long do » long d, long du, longer do

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 (yang guang)) ((((yuan hui) OR (yuan fei))) or (than china)) pei yang yao long do ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yang guang)) ((((yuan hui) OR (yuan fei))) OR (than china)) pei yang yao long do ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (yang guang)) ((((yuan hui) OR (yuan fei))) or (than china)) pei yang yao long do ;".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yang guang)) ((((yuan hui) OR (yuan fei))) or (than china)) pei yang yao long do ;*.