Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yan
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
jeong ghi » jeong mi
yang hua » wang hua, yang hui, ying hua
wang hui » wang hua, wang zhi, wang wei
hong ghi » zhong zhi, hong g, hong hai

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 wang ((yang hua) OR (wang hui)) gene sang minh ((jeong ghi) OR (hong ghi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang wang ((yang hua) or (wang hui)) gene sang minh ((jeong ghi) or (hong ghi)) ;*.