Perhaps you should try some spelling variations:
decreased semen » decreased level (Expand search), decreased sleep (Expand search), decreased serum (Expand search)
semen decrease » stent decrease (Expand search), speed decrease (Expand search), times decrease (Expand search)
risk processes » risk process (Expand search), work processes (Expand search), k processes (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python rapid » python api (Expand search), python based (Expand search), python and (Expand search)
rapid python » api python (Expand search), rapid method (Expand search), and python (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 semen decrease risk processes ) OR ( python rapid python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased semen decrease risk processes ) OR ( python rapid python python programming ))*.