Perhaps you should try some spelling variations:
dong ryang » dong yang, dong hoang
yang hui » wang hui, yang muxi, zhang hui
yang jui » yang judy, yang di, yang xi
ping shu » cong shu, ping ku, ping yu
a weit » a west, a soweit
a wei » ha wei, ma wei, a web
ryang » rryang
yan » ryan
yang » ryang

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: ((dong ryang) OR (wang yan)) yet ((a wei) OR (a weit)) ((yang hui) OR (yang jui)) ping shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong ryang) or (wang yan)) yet ((a wei) or (a weit)) ((yang hui) OR (yang jui)) ping shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((dong ryang) or (wang yan)) yet ((a wei) or (a weit)) ((yang hui) OR (yang jui)) ping shu ;*.