Perhaps you should try some spelling variations:
seung yeon » seung joon, seung won, seung youn
jeong yeon » jeong hyeok, jeang yean, jeong dahyeon
wang wang » wang yang, wang liang, wang yan
wang yong » wang yang, wang hyoung, wang yan
test awt » test auf
yan yi » yang yi, tan yi, yan zi
test a » test _, test 4, test 5

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 yi ((test awt) OR (test a)) min ((jeong yeon) OR (seung yeon)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang wang) or (wang yong)) yan yi ((test awt) or (test a)) min ((jeong yeon) OR (seung yeon)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang wang) or (wang yong)) yan yi ((test awt) or (test a)) min ((jeong yeon) OR (seung yeon)) ;*.