Perhaps you should try some spelling variations:
dong zhang » dong hoang, dong sheng, dong yang
yang mind » yang cindy, yang jin, sang minh
than bau » than a, than you, than big
than bad » than a, than big, than law
can data » can tata, dan data, fan data
mind how » aid how
how hai » how has, how ai, how hci

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 zhang fan ((((than bau) OR (than bad))) OR (can data)) yang mind how hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong zhang fan ((((than bau) OR (than bad))) or (can data)) yang mind how hai ;~".
• Adding a wildcard symbol may retrieve word variants: dong zhang fan ((((than bau) OR (than bad))) or (can data)) yang mind how hai ;*.