Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
liang tan » liang dan, liang sun, wing tan
zeng doug » jeng dong, zeng douglas
dann bin » dong bin
doug sin » dong sin
xu zeng » xu feng, yu zheng
wei xu » wei gu, wei lu
e a » et 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)))) ((e a) OR (y a)) wei xu zeng doug sin ;~.
• Adding a wildcard symbol may retrieve word variants: ((liang tan) or (((dann bin) or (dong yang)))) ((e a) or (y a)) wei xu zeng doug sin ;*.