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
yang yao » yang yang, wang yan, yang yi
fan data » can data, dan data, loan data
john how » john hope, john holt, john hook
how hai » how has, how ai, how hci

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: dong yang yao ((than daun) or (fan data)) yang john how hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang yao ((than daun) OR (fan data)) yang john how hai ;*.