Perhaps you should try some spelling variations:
selection programmes » election programmes (Expand search), selection programs (Expand search), selection program (Expand search)
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)
in decrease » in decreased (Expand search), on decrease (Expand search), pain decrease (Expand search)

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