Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
yang guang » yang yang, yan guan
yang liang » wang liang, yan liang, yang yang
zhang rong » zheng rong, zhang hong, zhang ming
dan china » can china, han china, dan china's
kong shu » kong siu, tong shui, kong sar

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 guang) OR (yang liang)) dan china zhang rong ((kong shu) OR (cong shu)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang guang) or (yang liang)) dan china zhang rong ((kong shu) or (cong shu)) ;*.