Talvez deva tentar algumas variações de ortografia:
piston controlled » tristor controlled (Expandir a busca), pattern controlled (Expandir a busca), in controlled (Expandir a busca)
by programming » by reprogramming (Expandir a busca), _ programming (Expandir a busca), c programming (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
coder piston » loaded piston (Expandir a busca), rotor piston (Expandir a busca)
using python » usando python (Expandir a busca), in python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder piston controlled by programming ) OR ( using python python python programming ))~.