Perhaps you should try some spelling variations:
efficient process » efficient processing (Expand search), efficient access (Expand search), efficient procedure (Expand search)
decrease increase » disease increased (Expand search), database increase (Expand search), decrease income (Expand search)
increase process » increase access (Expand search), increase protein (Expand search), decrease processes (Expand search)
method efficient » method efficiency (Expand search), methods efficiently (Expand search), methods efficiency (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python method » action method (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 increase process ) OR ( python python method efficient process ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease in decrease increase process ) OR ( python python method efficient process ))*.