Perhaps you should try some spelling variations:
kang chen » chang chen, jane chen, kang han
yan yuan » fang yuan, nan yan, yan clan
yan guan » gan guan, yang guang, yihan guan
dan yang » daun yang, tan yang, wang yang
yang jui » yang judy, yang di, yang xi
wang » wing, wan, lang
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 hyoung ((yan yuan) OR (yan guan)) dan yang jui ((kang chen) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hyoung ((yan yuan) OR (yan guan)) dan yang jui ((kang chen) or (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang hyoung ((yan yuan) OR (yan guan)) dan yang jui ((kang chen) or (dang hai)) ;*.