Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
min jeong » kin keong, min hong, mun leong
jeong shu » jeong su, cong shu
chen eng » chan eng, chen zheng, chen rong
wang nan » wang yan, wang ban, wang dan
nan gan » nan yan, gan guan
chen e » chen _, chen wei

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 nan gan li ((((chen e) OR (chen eng))) OR (cheng zhang)) min jeong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang nan gan li ((((chen e) or (chen eng))) or (cheng zhang)) min jeong shu ;*.