Perhaps you should try some spelling variations:
zheng ming » zhang ming, cheng ming, zheng rong
chen zheng » chen zhen, chen aizheng, cheng zhang
ming jeong » min jeong, ming kong
jeong shu » jeong su, cong shu
yan yuan » yan guan, fang yuan, yan clan
lin chen » li chen, lin chun, lili chen
nan yan » nan ya, wang yan, qian yan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((yan yuan) OR (nan yan)) lin chen zheng ming jeong shu ;~".
• Adding a wildcard symbol may retrieve word variants: lang ((yan yuan) OR (nan yan)) lin chen zheng ming jeong shu ;*.