Talvez deva tentar algumas variações de ortografia:
systems diffraction » systems interaction (Expandir a busca), systems diffusion (Expandir a busca), systems distribution (Expandir a busca)
diffraction pattern » diffraction patterns (Expandir a busca), diffraction scattering (Expandir a busca), interaction pattern (Expandir a busca)
pattern decrease » faster decrease (Expandir a busca), litter decrease (Expandir a busca), protein decrease (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
code systems » coded systems (Expandir a busca), core systems (Expandir a busca), ode systems (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 systems diffraction pattern decrease ) OR ( in python python python programming ))~.