Perhaps you should try some spelling variations:
cheng ling » cheng bing, cheng ming, cheng leong
kang yulu » mang yul
chen jing » chen ping, cheng bing, cheng ming
kong your » kong young, knowing your
yan kang » yuan kang, yan wang, yang yang
kong siu » kong eiu, wong siu, dong sin
nan yan » nan ya, wang yan, qian yan

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: nan yan kang yulu ((chen jing) OR (cheng ling)) jin ((kong siu) OR (kong your)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nan yan kang yulu ((chen jing) OR (cheng ling)) jin ((kong siu) or (kong your)) ;~".
• Adding a wildcard symbol may retrieve word variants: nan yan kang yulu ((chen jing) OR (cheng ling)) jin ((kong siu) or (kong your)) ;*.