Perhaps you should try some spelling variations:
yang guang » yang liang
than china » tuan china, han china, wuhan china
yang yang » wang yang, wang yan
yan guan » gan guan, yan yuan, yihan guan
hui yang » hui ying, du yang, h yang
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 (((yan guan) OR (yang guang)))) ((yuan fei) or (than china)) hui yang yao long do ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (((yan guan) OR (yang guang)))) ((yuan fei) OR (than china)) hui yang yao long do ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (((yan guan) OR (yang guang)))) ((yuan fei) or (than china)) hui yang yao long do ;".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (((yan guan) OR (yang guang)))) ((yuan fei) or (than china)) hui yang yao long do ;*.