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 speed » decrease need (Expand search), decreased sperm (Expand search), decreases sperm (Expand search)
decrease will » decrease with (Expand search), decrease cell (Expand search), decrease il (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » and decrease (Expand search), can increase (Expand search), to decrease (Expand search)
speed effect » speed effects (Expand search), speed affect (Expand search), speeds affect (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 can decrease ) OR ( decrease will decrease speed effect ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lesions decrease can decrease ) OR ( decrease will decrease speed effect ))*.