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