Perhaps you should try some spelling variations:
dong hoang » hong hong
than daun » than daem, than days, than rain
than data » than death, loan data, can data
hoang ka » hoang vu, hoang sy, hoang _
than bau » than bad, than a, than you
yang aid » yang anda, yang mind, yang di
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 hoang ka ((((than daun) OR (than bau))) OR (than data)) yang aid how ai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong hoang ka ((((than daun) OR (than bau))) or (than data)) yang aid how ai ;~".
• Adding a wildcard symbol may retrieve word variants: dong hoang ka ((((than daun) OR (than bau))) or (than data)) yang aid how ai ;*.