Perhaps you should try some spelling variations:
decreases reforming » decreases performance (Expand search)
reforming process » forming process (Expand search), forming 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)
decrease food » decreases food (Expand search), increase food (Expand search), decreases blood (Expand search)
food decrease » food decreases (Expand search), foods decreases (Expand search), flow decrease (Expand search)
decrease cell » decreases cell (Expand search)
cell decrease » cells decrease (Expand search), cells decreases (Expand search), will decrease (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease rats decreases reforming process ) OR ( decrease food decrease cell decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rats decreases reforming process ) OR ( decrease food decrease cell decrease ))*.