Perhaps you should try some spelling variations:
cheng yang » chen yang, cheng zhang, chen wang
yang yue » wang yue, yang yun, yang jui
yang jae » yang jie, myung jae, yang jui
jae song » jae yong, jie song, jae young
song sau » wong sau, kong sar, song pae
yang yu » yang yun, yang yi, sang yu
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 ((yang yu) or (yang yue)) cheng yang jae song sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((yang yu) OR (yang yue)) cheng yang jae song sau ;.
• Adding a wildcard symbol may retrieve word variants: wang yan ((yang yu) or (yang yue)) cheng yang jae song sau ;*.