Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
wong shiu » wong siu, cong shu, wong sau
ting tan » wing tan, liang tan, tang tang
hua gene » a gene, hua ren, hy5 gene
tin tan » tan tan, tin can, wing tan
jing ji » ying jin
shin » skin, sein, thin

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: yuan ((ting tan) OR (tin tan)) ((hua gene) OR (human gene)) jing ji ((wong shiu) OR (song shin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan ((ting tan) OR (tin tan)) ((hua gene) or (human gene)) jing ji ((wong shiu) or (song shin)) ;~".
• Adding a wildcard symbol may retrieve word variants: yuan ((ting tan) OR (tin tan)) ((hua gene) or (human gene)) jing ji ((wong shiu) or (song shin)) ;*.