Perhaps you should try some spelling variations:
chen king » chen ping, machen king, cheng bing
chen jing » chen ping, cheng bing, cheng ling
john kong » john king, john song, john wong
wing yan » wang yan, wing ian, wing tan
mang yul » sang yu, tang yun, yang yue
wang yue » wong yue, wang hua, wang yan
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 ((mang yul) or (wang yue)) ((chen king) OR (chen jing)) john kong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((mang yul) OR (wang yue)) ((chen king) OR (chen jing)) john kong sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ((mang yul) or (wang yue)) ((chen king) OR (chen jing)) john kong sar ;".
• Adding a wildcard symbol may retrieve word variants: wing yan ((mang yul) or (wang yue)) ((chen king) OR (chen jing)) john kong sar ;*.