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