Talvez deva tentar algumas variações de ortografia:
decreases sperm » decreased sperm (Expandir a busca), decreases serum (Expandir a busca), decreasing sperm (Expandir a busca)
decrease buried » decrease burden (Expandir a busca), decrease during (Expandir a busca), decrease observed (Expandir a busca)
sperm decrease » term decrease (Expandir a busca), speed decrease (Expandir a busca), speed decreases (Expandir a busca)
decrease life » decrease liver (Expandir a busca), increase life (Expandir a busca), decreases liver (Expandir a busca)
life decrease » life decreases (Expandir a busca), life decreased (Expandir a busca), life increase (Expandir a busca)
decrease to » decreased to (Expandir a busca), decrease toc (Expandir a busca), decrease the (Expandir a busca)
objects » object (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decreases sperm decrease to decrease ) OR ( decrease life decrease buried objects ))~.