Talvez deva tentar algumas variações de ortografia:
rationing efficient » rationing efficiency (Expandir a busca), obtaining efficient (Expandir a busca), designing efficient (Expandir a busca)
decoder rationing » power rationing (Expandir a busca), under rationing (Expandir a busca)
efficient coding » efficient routing (Expandir a busca), efficient cement (Expandir a busca)
coder decoder » encoder decoder (Expandir a busca), video decoder (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (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 decoder rationing efficient coding ) OR ( in python python python programming ))~.