Talvez deva tentar algumas variações de ortografia:
optimal preprocessing » optical processing (Expandir a busca), spectral preprocessing (Expandir a busca), data preprocessing (Expandir a busca)
discrete optimal » discrete time (Expandir a busca)
decrease during » increase during (Expandir a busca), increases during (Expandir a busca), increased during (Expandir a busca)
during discrete » using discrete (Expandir a busca), gauging discrete (Expandir a busca), varying discrete (Expandir a busca)
decrease can » decrease in (Expandir a busca), decrease and (Expandir a busca), decrease at (Expandir a busca)
can decrease » can increase (Expandir a busca), and decrease (Expandir a busca), to decrease (Expandir a busca)
decrease of » decrease in (Expandir a busca)
of decrease » or decrease (Expandir a busca), not decrease (Expandir a busca), to decrease (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease during discrete optimal preprocessing ) OR ( decrease can decrease of decrease ))~.