Talvez deva tentar algumas variações de ortografia:
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)
decrease fear » decreased fear (Expandir a busca), decrease fetal (Expandir a busca), decreased heart (Expandir a busca)
decrease and » decreases and (Expandir a busca), decrease in (Expandir a busca), decrease of (Expandir a busca)
and decrease » and decreases (Expandir a busca), and decreased (Expandir a busca), and increase (Expandir a busca)
decrease akt » decrease at (Expandir a busca), decrease after (Expandir a busca), decrease with (Expandir a busca)
akt decrease » not decrease (Expandir a busca), any decrease (Expandir a busca), salt decreases (Expandir a busca)
fear effects » year effects (Expandir a busca), fear affects (Expandir a busca), pear effects (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 AND decrease akt decrease ) OR ( decrease risk decrease fear effects ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( decrease and decrease akt decrease ) OR ( decrease risk decrease fear effects ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( decrease and decrease akt decrease ) OR ( decrease risk decrease fear effects ))*.