Perhaps you should try some spelling variations:
jeong yeon » jeong hyeok, jeang yean, seung yeon
minh jeong » min jeong, minh cong
dong yuan » don juan, dong hua, dong nan
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
wang hai » dang hai, shang hai, wang chau
wang hui » wang hua, wang zhi, wang wei

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong yuan ((wang hai) OR (wang hui)) gene sang minh jeong yeon ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yuan ((wang hai) OR (wang hui)) gene sang minh jeong yeon ;*".