Talvez deva tentar algumas variações de ortografia:
decreases spreading » disease spreading (Expandir a busca), decreases weaning (Expandir a busca)
spreading objects » speaking objects (Expandir a busca), spreading spects (Expandir a busca), leaming objects (Expandir a busca)
decrease risk » decreased risk (Expandir a busca), increase risk (Expandir a busca), decrease in (Expandir a busca)
risk decrease » risk decreases (Expandir a busca), risk increase (Expandir a busca), break decrease (Expandir a busca)
or decreases » or decrease (Expandir a busca), oic decreases (Expandir a busca), oil decreases (Expandir a busca)
decrease or » decrease of (Expandir a busca), decrease on (Expandir a busca), decrease pro (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease risk decrease risk decrease ) OR ( decrease or decreases spreading objects ))~.