Perhaps you should try some spelling variations:
cheng kang » chung kang, cheng zhang, chen yang
kang young » wang hyoung
young kim » yong kim, young firm, young liam
wing ian » wing tan, twinn ian, wing sun
ian clan » yan clan, das clan
yan yuan » yan guan, fang yuan, yan clan
nan yan » nan ya, wang yan, qian yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing ian clan ((yan yuan) OR (nan yan)) cheng kang young kim ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing ian clan ((yan yuan) OR (nan yan)) cheng kang young kim ;*".