Talvez deva tentar algumas variações de ortografia:
decrease risk » decreased risk (Expandir a busca), increase risk (Expandir a busca), decrease in (Expandir a busca)
on decrease » on decreased (Expandir a busca), of decrease (Expandir a busca), and decrease (Expandir a busca)
decrease or » decrease of (Expandir a busca), decrease on (Expandir a busca), decrease pro (Expandir a busca)
or decrease » of decrease (Expandir a busca), not decrease (Expandir a busca), to decrease (Expandir a busca)
risk object » disk object (Expandir a busca), mask object (Expandir a busca), task object (Expandir a busca)
of decree » of degree (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Caso esteja tentando utilizar os operadores booleanos, deve escrevê-los em Letras MAIÚSCULAS: (( decrease ((on decrease) OR (of decree)) _ decrease ) OR ( decrease OR decrease risk object ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( decrease ((on decrease) OR (of decree)) _ decrease ) OR ( decrease or decrease risk object ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( decrease ((on decrease) OR (of decree)) _ decrease ) OR ( decrease or decrease risk object ))*.