Perhaps you should try some spelling variations:
lang yan » wang yan, wang yang, zhang yan
yan dean » yang dean, lane dean, can deal
dean hua » dean a, tan hua, tuan hua
ren tian » ren jiao
wong sam » wong lai, von sam, wong max
wong sau » wong siu, wong shiu, wong lai
sar » sara, star, saur

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: lang yan dean hua ((ren tian) OR (ren yan)) john ((((wong sam) OR (wong sau))) OR (kong sar)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan dean hua ((ren tian) or (ren yan)) john ((((wong sam) OR (wong sau))) or (kong sar)) ;~".
• Adding a wildcard symbol may retrieve word variants: lang yan dean hua ((ren tian) or (ren yan)) john ((((wong sam) OR (wong sau))) or (kong sar)) ;*.