Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
ting peng » ting ping, ting ting, wang peng
chen yang » chen rong
yang chen » kang chen, yung chen, chang chen
chen ping » chen rong, chen wang
dong bin » dong sin, dong di, dann bin
yu chen » yu cheng, yi chen, yulu chen
ping ku » ping ke, ping yu

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) or (((ting peng) or (dong bin)))) ya yu chen yang chen ping ku ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (((ting peng) OR (dong bin)))) ya yu chen yang chen ping ku ;*.