Talvez deva tentar algumas variações de ortografia:
perfusion python » perfusion method (Expandir a busca), perfusion methods (Expandir a busca), perfusion with (Expandir a busca)
using perfusion » during perfusion (Expandir a busca), lung perfusion (Expandir a busca), using diffusion (Expandir a busca)
python program » action program (Expandir a busca)
python codigo » python coding (Expandir a busca), python code (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
coder python » compra python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder python codigo python program ) OR ( using perfusion python python programming ))~.