Perhaps you should try some spelling variations:
yulan chang » yuan chang, xiulan zhang
chen yulan » chen yugang, chen yulu, chen yun
chang hsun » chang ch'un, chung hsuan, chang su
yang lin » yang jin, wang lin, yang li
yang jui » yang di, yang xi
wai yan » wang yan, wei yang
yang yi » yang di, yang xi
yi chen » jui chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: wai yan ((((((yang lin) or (yang judy))) or (yang jui))) or (yang yi)) yi chen yulan chang hsun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wai yan ((((((yang lin) OR (yang judy))) OR (yang jui))) OR (yang yi)) yi chen yulan chang hsun ;*.