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 based » diffraction and (Expandir a busca), diffraction leed (Expandir a busca), diffraction ebsd (Expandir a busca)
based decrease » based increased (Expandir a busca), faster decrease (Expandir a busca), and 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)

Você pode obter mais resultados ajustando o argumento de busca.

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