Perhaps you should try some spelling variations:
seung yeon » seung joon, seung won, seung youn
jeong yeon » jeong hyeok, jeang yean, jeong dahyeon
test kaw » test a, test kit, test ke
test awt » test auf, test a
nan yan » nan ya, wang yan, qian yan
yang ai » yang di, yang yi, yang li
yang xi » yang di, yang yi, yang jui

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: nan yan ((yang ai) OR (yang xi)) ((test kaw) OR (test awt)) kin ((seung yeon) OR (jeong yeon)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nan yan ((yang ai) or (yang xi)) ((test kaw) or (test awt)) kin ((seung yeon) OR (jeong yeon)) ;~".
• Adding a wildcard symbol may retrieve word variants: nan yan ((yang ai) or (yang xi)) ((test kaw) or (test awt)) kin ((seung yeon) OR (jeong yeon)) ;*.