Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene jing » zeng jing
yan yang » yao yang, dan yang, tan yang
hua gene » human gene, a gene, hua ren
ying sar » using sar, kong sar
jing ji » ying jin
ji ying » jin ying, li ying, hoi ying
wang » 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 or wing) ((yan yang) OR (yang yang)) hua gene jing ji ying sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wing) ((yan yang) OR (yang yang)) hua gene jing ji ying sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wing) ((yan yang) OR (yang yang)) hua gene jing ji ying sar ;".
• Adding a wildcard symbol may retrieve word variants: (wang or wing) ((yan yang) OR (yang yang)) hua gene jing ji ying sar ;*.