Perhaps you should try some spelling variations:
yulan chung » susan chung
chen yulan » chen yugang, chen yulu, chen yun
dong hoang » hong hong
chung cong » chung chong, chung tong, chung mona
dong yang » wang yang, yang yang, dan yang
dong bin » dong sin, dong di, dann bin
a ta » a tax, a cta, a tay

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 hoang))) or (dong bin)) ((a ta) OR (a nta)) chen yulan chung cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong yang) OR (dong hoang))) OR (dong bin)) ((a ta) OR (a nta)) chen yulan chung cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong yang) or (dong hoang))) or (dong bin)) ((a ta) OR (a nta)) chen yulan chung cong shu ;*".