Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
tuan china » wuhan china, can china, taiwan china
hui yang » hui ying, du yang, hui ping
yao long » a long, so long, yao yang
h yang » _ yang
long d » long do, long du, long _
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yan) or (yang guang)) ((yuan fei) or (tuan china)) ((hui yang) OR (h yang)) yao long d ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yan) OR (yang guang)) ((yuan fei) OR (tuan china)) ((hui yang) OR (h yang)) yao long d ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yan) or (yang guang)) ((yuan fei) or (tuan china)) ((hui yang) OR (h yang)) yao long d ;*".