Perhaps you should try some spelling variations:
jeong yeon » jeong hyeok, jeang yean, seung yeon
wang wang » wang yang, wang liang, wang yan
wang yong » wang yang, wang hyoung, wang yan
mun jeong » min jeong, mun leong
api test » ai test, i test
ii test » ai test, i test, ii texts
a mun » a man

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 wang) OR (wang yong)) yan ((ii test) OR (api test)) a mun jeong yeon ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang wang) or (wang yong)) yan ((ii test) or (api test)) a mun jeong yeon ;*.