Perhaps you should try some spelling variations:
cheng ming » cheng bing, cheng ling, chen ping
chen cheng » chen chung, chen zheng, chen zhen
wong shiu » wong siu, wong sau
lang yan » wang yan, wang yang, zhang yan
yuan zi » yuan li, yuan fei, yuan hui
yan zi » yan zhi, ban zi
shin » skin, sein, thin

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan ((yuan zi) or (yan zi)) chen cheng ming ((((wong shiu) OR (cong shu))) or (song shin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan ((yuan zi) OR (yan zi)) chen cheng ming ((((wong shiu) OR (cong shu))) OR (song shin)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan ((yuan zi) or (yan zi)) chen cheng ming ((((wong shiu) OR (cong shu))) or (song shin)) ;*".