Perhaps you should try some spelling variations:
john ngosong » john song
hyoung ying » kyoung yang
min hyoung » min hong, mun young
chen yang » chen rong
jie song » jae song, jin song, kim song
ying yi » yang yi, ming yi, ping yi
yi chen » jui chen

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: min hyoung ying yi chen yang ((john ngosong) OR (jie song)) saur ;~.
• Adding a wildcard symbol may retrieve word variants: min hyoung ying yi chen yang ((john ngosong) or (jie song)) saur ;*.