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
hui yang » hui ying, du yang, h yang
yang yao » wang yan, yang yi, yang fan
tan hua » tuan hua, wang hua, tan chia
long do » long du, longer do, long ago
long d » long du, long _, long 2

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)) ((tan hua) or (than china)) hui yang yao ((long do) or (long d)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yang guang)) ((tan hua) OR (than china)) hui yang yao ((long do) OR (long d)) ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yang guang)) ((tan hua) or (than china)) hui yang yao ((long do) or (long d)) ;*.