Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
than daem » than data, than days, than deep
yang mind » yang cindy, yang jin, sang minh
yang fan » zhang fan, yang dean, yang yang
fan data » can data, dan data, loan data
how aid » how asia
how ai » how ae, how am, 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 fan ((than daem) OR (fan data)) yang mind ((how ai) OR (how aid)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang fan ((than daem) or (fan data)) yang mind ((how ai) OR (how aid)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang fan ((than daem) or (fan data)) yang mind ((how ai) OR (how aid)) ;*.