Perhaps you should try some spelling variations:
lipid decreased » life decreased (Expand search), rapid decrease (Expand search)
fear processing » pear processing (Expand search), fur processing (Expand search), after processing (Expand search)
decrease lipid » increases lipid (Expand search), increased lipid (Expand search)
decreased fear » decreased heart (Expand search), decreased mean (Expand search), decreased after (Expand search)
decrease drugs » disease drugs (Expand search), decrease treg (Expand search), release drugs (Expand search)
drugs decrease » drugs increases (Expand search), drugs release (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 lipid decreased fear processing ) OR ( decrease drugs decrease OR decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lipid decreased fear processing ) OR ( decrease drugs decrease OR decrease ))*.