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