Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
than daun » than bau, than daem, than data
yang john » young john, king john, yang jin
hope what » home what, shome what, here what
yang yao » yang yang, wang yan, yang yi
can data » can tata, dan data, fan data
hope hai » hope how, hope vi, hong hai

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