Perhaps you should try some spelling variations:
response decreased » response decrease (Expand search), lesions decreased (Expand search), response increase (Expand search)
decrease response » decreased response (Expand search), increased response (Expand search), increases response (Expand search)
feed processing » seed processing (Expand search), food processing (Expand search), and processing (Expand search)
decreased feed » decreased need (Expand search), decreased fear (Expand search), decreased level (Expand search)
decrease pain » decreases pain (Expand search), decrease in (Expand search), decreased brain (Expand search)
pain decrease » can decrease (Expand search), taping decrease (Expand search), strain decrease (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease response decreased feed processing ) OR ( decrease AND decrease pain decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease response decreased feed processing ) OR ( decrease and decrease pain decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease response decreased feed processing ) OR ( decrease and decrease pain decrease ))*.