Perhaps you should try some spelling variations:
dong sein » dong sin, dong bin, ong sean
dong wei » wang wei, dong di, dong hoi
yang yue » wang yue, yang yun, yang jui
yu chen » yu cheng, yulu chen, jui chen
yi chen » jui chen
ping ji » ping jia, jing ji, ping yi
ji yang » yi yang, liu yang, hui yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong sein) or (dong wei)) dann ((yu chen) OR (yi chen)) ping ji yang yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong sein) OR (dong wei)) dann ((yu chen) OR (yi chen)) ping ji yang yue ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong sein) or (dong wei)) dann ((yu chen) OR (yi chen)) ping ji yang yue ;*".