Perhaps you should try some spelling variations:
seung joon » kyung joon, seung won, seung yeon
seung youn » seung won, seung yeon
wang ying » wang yang, wang jing, wang ning
wang yong » wang yang, wang hyoung, wang yan
xi test » ai test, i test, ein test
ii test » ai test, i test, api test
a mine » _ mine, a mini, a mile

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 yong)) yang ((xi test) OR (ii test)) a mine ((seung youn) OR (seung joon)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang ying) or (wang yong)) yang ((xi test) OR (ii test)) a mine ((seung youn) or (seung joon)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang ying) or (wang yong)) yang ((xi test) OR (ii test)) a mine ((seung youn) or (seung joon)) ;*.