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)
bone processes » zone processes (Expand search), coke processes (Expand search), dose processes (Expand search)
decrease bone » decreased bone (Expand search), decreases bone (Expand search), increase bone (Expand search)
method python » method method (Expand search), python python (Expand search)
python and » python based (Expand search)
and method » and methods (Expand search), based method (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decreased sperm decrease bone processes ) OR ( python AND method python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decreased sperm decrease bone processes ) OR ( python and method python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased sperm decrease bone processes ) OR ( python and method python programming ))*.