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 actor » decrease after (Expand search), decreased after (Expand search), decreases motor (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
risk decrease » risk decreases (Expand search), risk increase (Expand search), break decrease (Expand search)
decrease pro » decrease or (Expand search), decrease food (Expand search), decrease treg (Expand search)
pro decrease » to decrease (Expand search), or decrease (Expand search), price decrease (Expand search)
actor object » action object (Expand search), alter object (Expand search), actor subjects (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 lesions decrease pro decrease ) OR ( decrease risk decrease actor object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lesions decrease pro decrease ) OR ( decrease risk decrease actor object ))*.