Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
yang yala » yang yang, yang all, yang dali
yang yao » yang yang, wang yan, yang fan
hua gene » a gene, hua ren, hy5 gene
hong ghi » zhong zhi, hong g, hong hai
yang xi » yang di, yang jui
yang yi » yang di, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong ((yang yala) OR (yang yao)) ((hua gene) or (human gene)) ((yang xi) or (yang yi)) hong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((yang yala) OR (yang yao)) ((hua gene) OR (human gene)) ((yang xi) OR (yang yi)) hong ghi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((yang yala) OR (yang yao)) ((hua gene) or (human gene)) ((yang xi) or (yang yi)) hong ghi ;".
• Adding a wildcard symbol may retrieve word variants: dong ((yang yala) OR (yang yao)) ((hua gene) or (human gene)) ((yang xi) or (yang yi)) hong ghi ;*.