Perhaps you should try some spelling variations:
cheng ming » cheng ling, chen ping, zhang ming
cheng bing » cheng ling, chen ping, chen jing
sang yue » wang yue, yang yue, sang hyup
jin wong » jin song, john wong, jin ying
wong sau » wong sam, wong siu, wong shiu
sang yu » sang hyup, wang yue, mang yul
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 ((sang yu) or (sang yue)) ((cheng ming) OR (cheng bing)) jin wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((sang yu) OR (sang yue)) ((cheng ming) OR (cheng bing)) jin wong sau ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((sang yu) or (sang yue)) ((cheng ming) OR (cheng bing)) jin wong sau ;".
• Adding a wildcard symbol may retrieve word variants: wang yan ((sang yu) or (sang yue)) ((cheng ming) OR (cheng bing)) jin wong sau ;*.