Perhaps you should try some spelling variations:
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decrease sucrose (Expand search)
method selection » method perception (Expand search), food selection (Expand search)
decrease pain » decreases pain (Expand search), decrease in (Expand search), decreased brain (Expand search)
pain decrease » can decrease (Expand search), strain decrease (Expand search), taping decrease (Expand search)
python in » python and (Expand search), python _ (Expand search), python c (Expand search)
in method » in methods (Expand search), cn method (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease pain decrease decrease processes ) OR ( python in method selection process ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease pain decrease decrease processes ) OR ( python in method selection process ))*.