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)
python based » action based (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)
based piton » based proton (Expand search), based photon (Expand search), based pilot (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 bone processes ) OR ( python based piton python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased sperm decrease bone processes ) OR ( python based piton python programming ))*.