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
pei yang » wei yang, hui yang, pei yun
yang yao » wang yan, yang yi, yang fan
long duo » long do, long run, long ago
tan hua » tuan hua, wang hua, tan chia
long du » long d, long do, long run

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