Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
ping wang » ping pong, hong wang
wang yang » wang yan, wang liang, wang yanling
kong sara » kong sar
hua gene » a gene, hua ren, hy5 gene
yang jun » yang jui, pang jun, yang jin
ying jin » yang jin, jing ji, yang jie

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

• Performing a fuzzy search may retrieve terms with similar spellings: ping wang yang ((hua gene) OR (human gene)) ((yang jun) or (ying jin)) kong sara ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ping wang yang ((hua gene) OR (human gene)) ((yang jun) OR (ying jin)) kong sara ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ping wang yang ((hua gene) OR (human gene)) ((yang jun) or (ying jin)) kong sara ;*".