Talvez deva tentar algumas variações de ortografia:
modulation system » education system (Expandir a busca), simulation system (Expandir a busca), regulation system (Expandir a busca)
coded modulation » code modulation (Expandir a busca), load modulation (Expandir a busca), based modulation (Expandir a busca)
system decrease » system decreases (Expandir a busca), system increase (Expandir a busca), symptom decrease (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
code coded » code code (Expandir a busca), gcode code (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( code coded modulation system decrease ) OR ( _ python python python programming ))~.