Perhaps you should try some spelling variations:
democracy decreases » democracy crises (Expand search), deficiency decreases (Expand search)
decrease democracy » debate democracy (Expand search), decisao democracy (Expand search), secrecy democracy (Expand search)
visual processing » signal processing (Expand search), minimal processing (Expand search), digital processing (Expand search)
decreases visual » decreases visceral (Expand search), decreases vascular (Expand search), decreases crystal (Expand search)
decrease will » decrease with (Expand search), decrease cell (Expand search), decrease il (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or decrease (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease democracy decreases visual processing ) OR ( decrease will decrease on decrease ))~".
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