Perhaps you should try some spelling variations:
decreases defense » decreases disease (Expand search), decreases aedes (Expand search), decreases levels (Expand search)
defense processes » defense process (Expand search), decrease processes (Expand search), disease processes (Expand search)
rats decreases » and decreases (Expand search), but decreases (Expand search), stress decreases (Expand search)
decrease rats » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
level python » lines python (Expand search)
python api » python and (Expand search)
api level » bi level (Expand search), i level (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: "(( decrease rats decreases defense processes ) OR ( python api level python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rats decreases defense processes ) OR ( python api level python programming ))*.