Perhaps you should try some spelling variations:
machine 2.1 » machines 2.1, machine 2.6, machines 2.2
man machine » human machine, a machine, ai machine
des human » does human, das human, des humains
dong bin » dong di
ya human » a human, das human, 2 human
2.1 kong » 2.1 long, 11 kong, 2.1 kind
kong siu » kong eiu, wong siu, kong sar
sin » sign, sind, skin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((dong bin) OR (dann bin))) or (dong sin)) ((ya human) or (des human)) man machine 2.1 kong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong bin) OR (dann bin))) OR (dong sin)) ((ya human) OR (des human)) man machine 2.1 kong siu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong bin) OR (dann bin))) or (dong sin)) ((ya human) or (des human)) man machine 2.1 kong siu ;".
• Adding a wildcard symbol may retrieve word variants: ((((dong bin) OR (dann bin))) or (dong sin)) ((ya human) or (des human)) man machine 2.1 kong siu ;*.