Perhaps you should try some spelling variations:
decrease lesions » disease lesions (Expand search), decreased response (Expand search), decrease adhesion (Expand search)
lesions decrease » response decrease (Expand search), lesions case (Expand search)
decrease walking » increase walking (Expand search), decreases weaning (Expand search), decrease during (Expand search)
walking decrease » walking decreases (Expand search), warming decreases (Expand search), taping decrease (Expand search)
decrease large » decrease age (Expand search), increase larger (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)
large object » large aspect (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 lesions decrease walking decrease ) OR ( decrease AND decrease large object ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease lesions decrease walking decrease ) OR ( decrease and decrease large object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lesions decrease walking decrease ) OR ( decrease and decrease large object ))*.