Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
than data » than death, dan data, fan data
loan data » loan rate
can data » can tata, dan data, fan data
yang aid » yang anda, yang mind, yang di
yang ka » yang fan, yang yao
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 yang ka ((((than data) OR (loan data))) OR (can data)) yang aid how hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang ka ((((than data) OR (loan data))) or (can data)) yang aid how hai ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang ka ((((than data) OR (loan data))) or (can data)) yang aid how hai ;*.