Perhaps you should try some spelling variations:
decreased sperm » decreased sleep (Expand search)
sperm decrease » term decrease (Expand search), speed decrease (Expand search), speed decreases (Expand search)
decrease loss » decrease costs (Expand search), decrease low (Expand search), decrease blood (Expand search)
loss decrease » loss decreases (Expand search), to decrease (Expand search), not decrease (Expand search)
decrease work » decrease or (Expand search), increase work (Expand search), decrease of (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or decrease (Expand search)
work object » word object (Expand search), book object (Expand search), dark object (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decreased sperm decrease loss decrease ) OR ( decrease on decrease work object ))~.