Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
than data » than death, can data, dan data
loan data » loan rate
sang minh » kang minah, anh minh, song min
yang yao » yang yang, wang yan, yang yi
than bau » than bad, than a, than you
minh hoa » mind how
hoa ai » how ai

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 yang yao ((than bau) OR (((than data) OR (loan data)))) sang minh hoa ai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang yao ((than bau) or (((than data) OR (loan data)))) sang minh hoa ai ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang yao ((than bau) or (((than data) OR (loan data)))) sang minh hoa ai ;*.