Perhaps you should try some spelling variations:
decrease proximity » decreased toxicity (Expand search), decrease productivity (Expand search)
proximity effects » proximity effect (Expand search), toxicity effects (Expand search)
decreases brain » decreased brain (Expand search), increases brain (Expand search), decreases brown (Expand search)
brain decrease » brain decreases (Expand search), brazil decrease (Expand search), strain decrease (Expand search)
decrease can » decrease and (Expand search), decrease at (Expand search), decrease on (Expand search)
can decrease » can increase (Expand search), and decrease (Expand search), to decrease (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain decrease (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease in decrease can decrease ) OR ( decreases brain decrease proximity effects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease in decrease can decrease ) OR ( decreases brain decrease proximity effects ))*.