Perhaps you should try some spelling variations:
chen king » chen jing, machen king, cheng bing
chen ping » chen rong, chen yang, chen wang
john kong » john king, john song, john wong
wing yan » wang yan, wing ian, wing tan
sang yue » wang yue, yang yue, sang hyup
sang yu » sang hyup, wang yue, mang yul
sar » sara, star, saur

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing yan ((sang yu) or (sang yue)) ((chen king) OR (chen ping)) john kong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((sang yu) OR (sang yue)) ((chen king) OR (chen ping)) john kong sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ((sang yu) or (sang yue)) ((chen king) OR (chen ping)) john kong sar ;".
• Adding a wildcard symbol may retrieve word variants: wing yan ((sang yu) or (sang yue)) ((chen king) OR (chen ping)) john kong sar ;*.