Perhaps you should try some spelling variations:
yang yulu » yang yue, yang yun
chen yang » chen rong
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, sang yu, tang yun
wong sau » wong sam, wong siu, wong shiu

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)) 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)) chen yang john wong sau ;".
• Adding a wildcard symbol may retrieve word variants: wang yao ((yang yulu) OR (mang yul)) chen yang john wong sau ;*.