Talvez deva tentar algumas variações de ortografia:
noise preprocessing » image preprocessing (Expandir a busca), the preprocessing (Expandir a busca), based preprocessing (Expandir a busca)
decrease noise » decrease risk (Expandir a busca)
decreased the » decreases the (Expandir a busca), decrease the (Expandir a busca), decreased ph (Expandir a busca)
in decreased » is decreased (Expandir a busca), in deceased (Expandir a busca), and decreased (Expandir a busca)
the decrease » to decrease (Expandir a busca), and decrease (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease NOT decrease noise preprocessing ) OR ( decrease in decreased the decrease ))~.