Perhaps you should try some spelling variations:
hyoung yang » kyoung yang
hong yeon » jeong yeon, hong seo, hong een
aii test » ai test, api test, ein test
ii test » ai test, i test, api test
kaw min » kyaw min, kan min, law main
wang » wing, wan, lang
myeon » myeong, myron, pyeon

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 yang ((aii test) OR (ii test)) kaw min ((hong yeon) OR (dong myeon)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hyoung yang ((aii test) or (ii test)) kaw min ((hong yeon) OR (dong myeon)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang hyoung yang ((aii test) or (ii test)) kaw min ((hong yeon) OR (dong myeon)) ;*.