Perhaps you should try some spelling variations:
jeong hyeok » jeong dahyeon
seung yeon » jeong yeon, seung joon, seung won
test kaw » test a, test kit, test awt
yan yan » yan yuan, nan yan, yang yang
ai test » api test, i test, ii test
kaw mun » kyaw min
yan ai » can ai, yan zi
wang » wing, wan, lang

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 yan yan ai test kaw mun ((seung yeon) OR (jeong hyeok)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan yan ai test kaw mun ((seung yeon) or (jeong hyeok)) ;*.