Perhaps you should try some spelling variations:
decrease processes » disease processes (Expand search), decay processes (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decrease sucrose (Expand search)
ration processing » radiation processing (Expand search), emotion processing (Expand search), grain processing (Expand search)
method ration » method oration (Expand search), method reaction (Expand search), method rain (Expand search)
python cat » python data (Expand search), python c (Expand search), python 2a (Expand search)
cat method » cata method (Expand search), cate method (Expand search), cut method (Expand search)

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