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
huei ying » hui ying, hoi ying
long du » long do, long run, long did
h yang » _ yang, hui yang
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: ((yang yang) or (yang guang)) than china ((h yang) or (huei ying)) 2 ((long du) OR (long d)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yang guang)) than china ((h yang) OR (huei ying)) 2 ((long du) OR (long d)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (yang guang)) than china ((h yang) or (huei ying)) 2 ((long du) OR (long d)) ;*".