Perhaps you should try some spelling variations:
ying yang » yang yang, yin yang, ying chang
kong saur » kong siu, kong your, wong sau
ran ying » fan ying, tan ying, jin ying
hua gene » human gene, hua ren, hy5 gene
ying tan » wing tan, liang tan, ying bank
yang jin » yang jie, yang jun, ying jin
a gene » a genre, a gender, a gentle
sar » sara, star

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

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