Perhaps you should try some spelling variations:
dong hoang » hong hong
hoang dean » yang dean
than daem » than data, than days, than deep
than dan » than data, than days, than done
yang jin » yang jie, yang jun, ying jin
hong hai » shang hai, zhong tai, dang hai
chang ha » chang mae

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 hoang dean ((than dan) OR (than daem)) yang jin ((hong hai) OR (chang ha)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong hoang dean ((than dan) OR (than daem)) yang jin ((hong hai) or (chang ha)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong hoang dean ((than dan) OR (than daem)) yang jin ((hong hai) or (chang ha)) ;*.