Perhaps you should try some spelling variations:
john wong » john song, john bonn
seng john » king john, kong john, seng koh
yan juan » san juan, yan yuan, don juan
yan guan » gan guan, yan yuan, yang guang
eng seng » hang seng, peng yeng, song seng
wong sau » wong sam, wong siu, wong shiu
wang » wing

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang OR wan) OR lang) nan ((yan juan) OR (yan guan)) eng seng john wong sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang or wan) or lang) nan ((yan juan) OR (yan guan)) eng seng john wong sau ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang or wan) or lang) nan ((yan juan) OR (yan guan)) eng seng john wong sau ;*.