Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
one class » one case
class do » classic do, class die, class _
jong min » gong min, song min, song ming
yang jin » yang jie, yang jun, ying jin
wang yue » wong yue, wang hua, wang yan
yang xi » yang di, yang yi, yang jui
do sin » dong sin
sin ce » since ce

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 do sin ce ((((jong min) OR (yang guang))) OR (yang jin)) ((wang yue) OR (yang xi)) ;~.
• Adding a wildcard symbol may retrieve word variants: one class do sin ce ((((jong min) or (yang guang))) or (yang jin)) ((wang yue) or (yang xi)) ;*.