Perhaps you should try some spelling variations:
wang wang » wang liang, wang yan, wang yong
wang yang » wang yan, wang liang, wang yanling
gene yang » gene bank
yang hua » wang hua, yang hui, ying hua
hua gene » human gene, a gene, hua ren
jin song » jie song, john song, jin ying
kim song » kim young, kim eung

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang yang hua gene yang ((jin song) or (kim song)) same ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yang hua gene yang ((jin song) OR (kim song)) same ;.
• Adding a wildcard symbol may retrieve word variants: wang wang yang hua gene yang ((jin song) or (kim song)) same ;*.