Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
dong yang » dong hoang, wang yang, yang yang
guang hua » wang hua, gang hu, guang eu
sang minh » kang minah, anh minh, song min
wei sang » wei shang, wei wang, wei yang
wong yue » wang yue, hong yu
yulu » zulu

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong yang guang hua wei sang minh ((wong yue) or (chen yulu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang guang hua wei sang minh ((wong yue) OR (chen yulu)) ;*.