Perhaps you should try some spelling variations:
john ngosong » john song
ngosong shin » song shin
dong yang » dong hoang, wang yang, yang yang
liang tan » liang dan, liang sun, wing tan
dann bin » dong bin
guo john » seo john
wei guo » wei gu, wei tuo
et a » et al, et la, e a
y a » y la

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: ((liang tan) OR (((dann bin) OR (dong yang)))) ((et a) OR (y a)) wei guo john ngosong shin ;~.
• Adding a wildcard symbol may retrieve word variants: ((liang tan) or (((dann bin) or (dong yang)))) ((et a) or (y a)) wei guo john ngosong shin ;*.