Perhaps you should try some spelling variations:
class dong » class doing, class do
yang guang » yang yang, yan guan, yang liang
one class » one case
dong bin » dong sin, dong di, dann bin
song jin » song min, shang jin, song shin
yang yun » yang jun, tang yun, yang yue
bin ce » bin we

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: one class dong bin ce ((((song jin) OR (yang guang))) OR (yang judy)) ((yang yun) OR (yang di)) ;~.
• Adding a wildcard symbol may retrieve word variants: one class dong bin ce ((((song jin) or (yang guang))) or (yang judy)) ((yang yun) or (yang di)) ;*.