Perhaps you should try some spelling variations:
dong hoang » hong hong
hoang yang » huang yang, wang yang, yang yang
than bau » than bad, than a, than you
can data » can tata, dan data, fan data
yang tin » yang jin, yang lin, yang jing
tin hong » tan hong, kia hong, thi hong
hong hai » shang hai, zhong tai, dang hai

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: dong hoang yang ((than bau) OR (can data)) yang tin hong hai ;~.
• Adding a wildcard symbol may retrieve word variants: dong hoang yang ((than bau) or (can data)) yang tin hong hai ;*.