Perhaps you should try some spelling variations:
yan clan » das clan, yan yuan
yan guan » gan guan, yan yuan, yang guang
hua gene » human gene, a gene, hua ren
yang jie » yang jin, yang di, yang jui
wong siu » wong shiu, kong siu, wong sau
yan tan » tan tan, yan wang, yan yuan
yang ji » yang jui, yang jin, yang di
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 ((yan tan) or (((yan clan) OR (yan guan)))) hua gene ((yang ji) or (yang jie)) wong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan tan) OR (((yan clan) OR (yan guan)))) hua gene ((yang ji) OR (yang jie)) wong siu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan tan) or (((yan clan) OR (yan guan)))) hua gene ((yang ji) or (yang jie)) wong siu ;*".