Talvez deva tentar algumas variações de ortografia:
period programming » end programming (Expandir a busca), learning programming (Expandir a busca)
modulation period » modulation method (Expandir a busca), circulation period (Expandir a busca), modulation applied (Expandir a busca)
coder modulation » code modulation (Expandir a busca), coded modulation (Expandir a busca), power modulation (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
coder coder » coder decoder (Expandir a busca), code code (Expandir a busca), decoder codec (Expandir a busca)
in python » _ python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder coder modulation period programming ) OR ( in python python python programming )).