Perhaps you should try some spelling variations:
sung myung » song byung
lang yan » wang yan, wang yang, zhang yan
yan yuan » yan guan, fang yuan, nan yan
yuan iii » yuan fei, run iii, yuan hui
iii gene » iii rene, iii gender, iii genome
yang jin » yang jie, yang jun, shang jin
ying jin » jing ji, yang jie

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: lang yan yuan iii gene ((yang jin) OR (ying jin)) ((sung myung) OR (kyoung yang)) ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan yuan iii gene ((yang jin) or (ying jin)) ((sung myung) or (kyoung yang)) ;*.