Perhaps you should try some spelling variations:
decreased fear » decreased heart (Expand search), decreased mean (Expand search), decreased after (Expand search)
pain decreased » pain decrease (Expand search), in decreased (Expand search), brain decreases (Expand search)
decrease pain » decreases pain (Expand search), decrease in (Expand search), decreased brain (Expand search)
fear objects » learn objects (Expand search), linear objects (Expand search), earth objects (Expand search)
decrease on » decrease in (Expand search), decrease or (Expand search), decrease and (Expand search)
on decrease » on decreased (Expand search), or decrease (Expand search), and decrease (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to 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 on decrease of decrease ) OR ( decrease pain decreased fear objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease on decrease of decrease ) OR ( decrease pain decreased fear objects ))*.