Perhaps you should try some spelling variations:
costs decreased » cross decreased (Expand search), causes decreased (Expand search), not decreased (Expand search)
fear processing » pear processing (Expand search), fur processing (Expand search), after processing (Expand search)
decrease costs » decreasing costs (Expand search), decreases post (Expand search), disease costs (Expand search)
decreased fear » decreased heart (Expand search), decreased fas (Expand search), decreased feed (Expand search)
decrease pro » decrease food (Expand search), decrease treg (Expand search), decrease of (Expand search)
pro decrease » to decrease (Expand search), or decrease (Expand search), price decrease (Expand search)
in decrease » in decreased (Expand search), and decrease (Expand search), can 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 costs decreased fear processing ) OR ( decrease in decrease pro decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease costs decreased fear processing ) OR ( decrease in decrease pro decrease ))*.