Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong gang » gong gang, hong gang, yong phang
wang ning » wang jing, wang liang, wang yang
yan yuan » fang yuan, nan yan, yan clan
yan guan » gan guan, yang guang, yihan guan
eang hay » kang han
hai » hadi, haji, hari

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 yong gang ((yan yuan) OR (yan guan)) wang ning ((eang hay) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong gang ((yan yuan) or (yan guan)) wang ning ((eang hay) OR (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong gang ((yan yuan) or (yan guan)) wang ning ((eang hay) OR (dang hai)) ;*.