Perhaps you should try some spelling variations:
young male » young males, young age
zhang ping » zhang ming, zhang jing, zhang ting
ping yang » ping wang, ying yang, ping pong
young man » young men, young woman, young mary
wong siu » wong shiu, kong siu, wong sau
li yun » li yue, li qun, ly yun
li jun » liu jun, li jin, li ju
dong » doing, long, done

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

• If you are trying to use Boolean operators, they must be ALL CAPS: zhang ping yang ((li yun) OR (li jun)) ((young man) OR (young male)) ((dong sin) OR (wong siu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhang ping yang ((li yun) or (li jun)) ((young man) OR (young male)) ((dong sin) or (wong siu)) ;~".
• Adding a wildcard symbol may retrieve word variants: zhang ping yang ((li yun) or (li jun)) ((young man) OR (young male)) ((dong sin) or (wong siu)) ;*.