Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
yang wang » yang yang, yan wang, yang liang
tuan hua » tan hua, tuan vu, yuan hui
wei yang » pei yang, wei wang, wei yang's
yang jie » yang jin, yang di, yang jui
yan hua » tan hua, ya hua, wang hua
long du » long d, long run, long did
long do » long d, longer do, long ago

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang wang) or (yang guang)) ((yan hua) or (tuan hua)) wei yang jie ((long du) OR (long do)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang wang) OR (yang guang)) ((yan hua) OR (tuan hua)) wei yang jie ((long du) OR (long do)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang wang) or (yang guang)) ((yan hua) or (tuan hua)) wei yang jie ((long du) OR (long do)) ;".
• Adding a wildcard symbol may retrieve word variants: ((yang wang) or (yang guang)) ((yan hua) or (tuan hua)) wei yang jie ((long du) OR (long do)) ;*.