Perhaps you should try some spelling variations:
jeong yeon » jeong hyeok, jeang yean, jeong dahyeon
seung yeon » seung joon, seung won, seung youn
wang yong » wang yang, wang hyoung, wang yan
wang jing » wang ning, wang liang, wang yang
test kim » test kit, test kits, test ke
yang ai » yang di, yang xi, yang yi
ai test » api test, i test, ii test
kim min » kim minn, kim jina

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 yong) OR (wang jing)) yang ai test kim min ((jeong yeon) OR (seung yeon)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yong) or (wang jing)) yang ai test kim min ((jeong yeon) or (seung yeon)) ;*.