Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yan » yang yang, wang yan, yang fan
reit yan » ren yan
yong sar » kong sar, wong sau, yong suk
yong cai » dong cao, yong c, yong wah
wong sam » wong sau, wong lai, kong sar
yan jiu » yang jie, yang jin, pang jiu
a reit » a rein, a relict
yan a » can a, yan _, jan a

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: wang yang yan a reit yan jiu ((((yong sar) OR (yong cai))) OR (wong sam)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yan a reit yan jiu ((((yong sar) OR (yong cai))) or (wong sam)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang yan a reit yan jiu ((((yong sar) OR (yong cai))) or (wong sam)) ;*.