Talvez deva tentar algumas variações de ortografia:
photon interaction » photon interactions (Expandir a busca), phonon interaction (Expandir a busca), proton interactions (Expandir a busca)
and programming » _ programming (Expandir a busca), goal programming (Expandir a busca)
code python » codigo python (Expandir a busca), pacote python (Expandir a busca)
python and » python based (Expandir a busca)
code code » code cdc (Expandir a busca), code co (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: (( code code python and programming ) OR ( photon interaction in python programming ))~.