Talvez deva tentar algumas variações de ortografia:
diffraction raman » diffraction data (Expandir a busca), diffraction rays (Expandir a busca), diffraction grating (Expandir a busca)
code diffraction » powder diffraction (Expandir a busca), wedge diffraction (Expandir a busca), wave diffraction (Expandir a busca)
raman decrease » can decrease (Expandir a busca), may decrease (Expandir a busca), ratio 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)
of python » _ python (Expandir a busca), in python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

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