Perhaps you should try some spelling variations:
chen yulan » chen yugang, chen yulu
min jeong » kin keong, min hong, mun leong
jeong ghi » hong ghi, jeong mi
dong cao » dong xiao, dan cao, dong nan
dong bin » dong di, dann bin
chen yun » chen yu, chen yue, chen yiqun
ya a » a a, y a, ye a
sin » sign, sind, skin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong cao) or (((dong bin) or (dong sin)))) ya a ((chen yulan) OR (chen yun)) min jeong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong cao) OR (((dong bin) OR (dong sin)))) ya a ((chen yulan) OR (chen yun)) min jeong ghi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong cao) or (((dong bin) or (dong sin)))) ya a ((chen yulan) OR (chen yun)) min jeong ghi ;".
• Adding a wildcard symbol may retrieve word variants: ((dong cao) or (((dong bin) or (dong sin)))) ya a ((chen yulan) OR (chen yun)) min jeong ghi ;*.