Perhaps you should try some spelling variations:
seung yeon » jeong yeon, seung joon, seung won
wang ying » wang yang, wang yong, wang ning
wang jing » wang ning, wang liang, wang yang
min seung » min jeong
chang yi » chong yi, zhang yi, chang gui
test 4uf » test auf, test 4.2, test 4.3
test 4 » test _

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 ying) OR (wang jing)) chang yi ((test 4uf) OR (test 4)) min seung yeon ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang ying) OR (wang jing)) chang yi ((test 4uf) or (test 4)) min seung yeon ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang ying) OR (wang jing)) chang yi ((test 4uf) or (test 4)) min seung yeon ;*.