Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
yang yang » wang yang, wang yan
yan yang » yao yang, dan yang, yan wang
tan yang » dan yang, tan ying, tan yong
ying sar » using sar, kong sar
ying li » ling li, yin li, ying jin
yang li » yang lin, yang di, yang xi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing ((((yan yang) or (tan yang))) or (yang yang)) human gene ((ying li) OR (yang li)) ying sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing ((((yan yang) OR (tan yang))) OR (yang yang)) human gene ((ying li) OR (yang li)) ying sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing ((((yan yang) or (tan yang))) or (yang yang)) human gene ((ying li) OR (yang li)) ying sar ;".
• Adding a wildcard symbol may retrieve word variants: wing ((((yan yang) or (tan yang))) or (yang yang)) human gene ((ying li) OR (yang li)) ying sar ;*.