Talvez deva tentar algumas variações de ortografia:
code permutation » the permutation (Expandir a busca), idle permutation (Expandir a busca), of permutation (Expandir a busca)
permutation test » germination test (Expandir a busca), mutation test (Expandir a busca), permutation based (Expandir a busca)
test decrease » stent decrease (Expandir a busca), term decrease (Expandir a busca), that decrease (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
code code » code cdc (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

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