Perhaps you should try some spelling variations:
wang zheng » tang zheng, wang zhenpo, fang sheng
zheng han » cheng han, zhang han, zheng alan
can wage » can we, non wage
wage lag » wage law, wage laws, wage plan
lag ming » late ming, tai ming, wan ming
han can » man can, ghana can, han chang
sar » sara, star, saur

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang zheng han can wage lag ming ((kong yam) or (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang zheng han can wage lag ming ((kong yam) OR (kong sar)) ;.
• Adding a wildcard symbol may retrieve word variants: wang zheng han can wage lag ming ((kong yam) or (kong sar)) ;*.