Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
than daun » than bau, than data, than days
than daem » than data, than days, than deep
loan data » loan rate
yang aid » yang anda, yang mind, yang di
yang ka » yang fan, yang yao
how ai » how aid, how ae, how am

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 daun) OR (than daem))) OR (loan data)) yang aid how ai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang ka ((((than daun) OR (than daem))) or (loan data)) yang aid how ai ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang ka ((((than daun) OR (than daem))) or (loan data)) yang aid how ai ;*.