Talvez deva tentar algumas variações de ortografia:
decreased sperm » decreased sleep (Expandir a busca)
sperm decrease » term decrease (Expandir a busca), speed decrease (Expandir a busca), speed decreases (Expandir a busca)
decrease rate » decreased rate (Expandir a busca), decreases rate (Expandir a busca), decrease at (Expandir a busca)
rate decrease » rats decreases (Expandir a busca), rate increase (Expandir a busca), to decrease (Expandir a busca)
of decreased » of deceased (Expandir a busca), of decrease (Expandir a busca), not decreased (Expandir a busca)
decrease akt » decrease at (Expandir a busca), decrease and (Expandir a busca), decrease after (Expandir a busca)
decrease of » decrease in (Expandir a busca)
akt basic » at basic (Expandir a busca), art basic (Expandir a busca), past basic (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease of decreased sperm decrease ) OR ( decrease rate decrease akt basic ))~.