Perhaps you should try some spelling variations:
thang cong » thang long, zheng cong
dong yang » dong hoang, wang yang, yang yang
dong sink » dong sin, dong bin
dong ping » dong sin, dong bin, dong jung
yan thang » yan zhang, xuan thang, yuan chang
chen yan » chen yang, chen tan, chen yun
yu chen » yu cheng, yi chen, yulu chen

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 (((dong sink) OR (dong ping)))) ya yu chen yan thang cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (((dong sink) OR (dong ping)))) ya yu chen yan thang cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (((dong sink) OR (dong ping)))) ya yu chen yan thang cong shu ;*".