Perhaps you should try some spelling variations:
chen yang » chen rong
yang yulu » yang yue, yang yun
yang john » young john, king john, yang jin
john wong » john song, john bonn
wang yao » wang yan, yang yao, gang yao
mang yul » wang yue, tang yun, yang yue
wong sau » wong sam, wong siu, wong shiu
sang yu » sang hyup, wang yue, sang yoo

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yao ((yang yulu) or (((mang yul) OR (sang yu)))) chen yang john wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yao ((yang yulu) OR (((mang yul) OR (sang yu)))) chen yang john wong sau ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yao ((yang yulu) or (((mang yul) OR (sang yu)))) chen yang john wong sau ;".
• Adding a wildcard symbol may retrieve word variants: wang yao ((yang yulu) or (((mang yul) OR (sang yu)))) chen yang john wong sau ;*.