Perhaps you should try some spelling variations:
chung hsuan » chung chuan, hung hsun
chang hsun » chang ch'un, chang su, chang yun
yulu chen » yu chen
kian dang » kian ming
yu cheng » yu chen, _ cheng
wai yan » wang yan, wei yang
yan yao » yang yao, gang yao, yan yuan

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: wai yan yao ((yulu chen) OR (yu cheng)) kian dang ((chang hsun) OR (chung hsuan)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wai yan yao ((yulu chen) or (yu cheng)) kian dang ((chang hsun) OR (chung hsuan)) ;~".
• Adding a wildcard symbol may retrieve word variants: wai yan yao ((yulu chen) or (yu cheng)) kian dang ((chang hsun) OR (chung hsuan)) ;*.