Perhaps you should try some spelling variations:
yanling yang » yang yang, ying yang
human gene » human genome, human gender, human bone
hua gene » a gene, hua ren, hy5 gene
yang xin » yang jin, yang lin, zhang xin
song ghi » hong ghi, song shin, song li
yang xi » yang di, yang yi, yang jui
wang » wing, wan, lang

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

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