Perhaps you should try some spelling variations:
decreased fear » decreased heart (Expand search), decreased mean (Expand search), decreased after (Expand search)
rate decreased » rate decrease (Expand search), rats decreased (Expand search), are decreased (Expand search)
decrease will » decrease with (Expand search), decrease cell (Expand search), decrease il (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)
fear based » agar based (Expand search), feature based (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 will decrease to decrease ) OR ( decrease rate decreased fear based ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease will decrease to decrease ) OR ( decrease rate decreased fear based ))*.