Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
joon chang » hoong chang, boon chong, jin chang
kyoung yun » young yun, kyoung yang, hyoung gun
chang tan » chang ha, chang mae, hong tan
yang yang » wang yang, wang yan
yan yuan » yan guan, fang yuan, nan yan
tan hua » tuan hua, wang hua, tan chia
hua ren » hua chen

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: joon chang tan hua ren ((yan yuan) OR (((yang guang) OR (yang yang)))) kyoung yun ;~.
• Adding a wildcard symbol may retrieve word variants: joon chang tan hua ren ((yan yuan) or (((yang guang) or (yang yang)))) kyoung yun ;*.