Perhaps you should try some spelling variations:
mental processing » central processing (Expand search), minimal processing (Expand search), mineral processing (Expand search)
decreases mental » decreased mental (Expand search), decreases rectal (Expand search), decreases medial (Expand search)
foods decreases » loss decreases (Expand search)
decrease foods » decrease food (Expand search), decreases food (Expand search), decreased food (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to decrease (Expand search)
decrease will » decrease with (Expand search), decrease cell (Expand search), decrease il (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 foods decreases mental processing ) OR ( decrease rate decrease will decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease foods decreases mental processing ) OR ( decrease rate decrease will decrease ))*.