Perhaps you should try some spelling variations:
xiaodong han » xiaodong huang, xiaotong zhang, xiaodong yu
han china » hang china, than china, can china
minh dang » minh cong
mich dann » ich dann, mich das
china du » china due, china des, china den
du sang » du yang
wang » wing, wan, lang

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: wang xiaodong han china du sang ((minh dang) OR (mich dann)) hadi ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaodong han china du sang ((minh dang) or (mich dann)) hadi ;*.