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)
methods python » methods action (Expand search), pythons python (Expand search), methods method (Expand search)
decrease cure » decrease due (Expand search), decrease burden (Expand search), decrease the (Expand search)
cure process » care process (Expand search), due process (Expand search), closure process (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decreased sperm decrease cure process ) OR ( python AND methods python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased sperm decrease cure process ) OR ( python AND methods python programming ))*.