Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
jeong ghi » hong ghi, jeong mi
yan dang » yan wang, yan liang, yan zhang
sang min » sang minh, song min, tang min
lang min » tang min, chang min, lang wien
a1 gene » a gene, 1 gene, 11 gene
wang » wing, wan

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 ((yan dang) OR (yang yang)) a1 gene ((sang min) OR (lang min)) jeong ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan dang) OR (yang yang)) a1 gene ((sang min) or (lang min)) jeong ghi ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan dang) OR (yang yang)) a1 gene ((sang min) or (lang min)) jeong ghi ;*.