Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
than daun » than bau, than daem, than data
loan data » loan rate
yang jie » yang di, yang jui, yang xi
yang jin » yang jun, ying jin, shang jin
yang ka » yang fan, yang yao
how am » how ae, how ai

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