Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
yuan wang » yan wang, yuan kang, yuan chang
tuan hua » tan hua, yuan hui
wei yang » pei yang, wei wang, wei yang's
hui yang » hui ying, du yang, h yang
jie long » jie song, life long, live long
tuan vu » thanh vu
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: ((yuan wang) or (yang guang)) ((tuan hua) or (tuan vu)) ((wei yang) or (hui yang)) jie long du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yang guang)) ((tuan hua) OR (tuan vu)) ((wei yang) OR (hui yang)) jie long du ;.
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yang guang)) ((tuan hua) or (tuan vu)) ((wei yang) or (hui yang)) jie long du ;*.