Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
than daun » than bau, than daem, than days
than data » than death, can data, dan data
loan data » loan rate
yang aid » yang anda, yang mind, yang di
how aid » how asia

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