Perhaps you should try some spelling variations:
decrease lesion » decrease adhesion (Expand search), decrease asian (Expand search), decrease soon (Expand search)
decrease speed » decrease need (Expand search), decreased sperm (Expand search), decreases sperm (Expand search)
speed decrease » speed decreases (Expand search), spread decreased (Expand search), stent decrease (Expand search)
lesion pattern » lesions pattern (Expand search), lesion patterns (Expand search), design pattern (Expand search)
decrease may » decrease at (Expand search), decrease by (Expand search), decrease human (Expand search)
may decrease » may increase (Expand search), can decrease (Expand search), to decrease (Expand search)
decrease il » decreased il (Expand search), decrease in (Expand search), decrease hiv (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (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 il decrease speed decrease ) OR ( decrease may decrease lesion pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease il decrease speed decrease ) OR ( decrease may decrease lesion pattern ))*.