Perhaps you should try some spelling variations:
decrease lesion » decrease adhesion (Expand search), decrease asian (Expand search), decrease soon (Expand search)
lesion pattern » lesions pattern (Expand search), lesion patterns (Expand search), design pattern (Expand search)
decrease spp » decrease sod (Expand search), decrease std (Expand search), decrease soon (Expand search)
spp decrease » spp increase (Expand search), speed decrease (Expand search), help decrease (Expand search)
decrease any » decrease and (Expand search), decreases and (Expand search), decreased and (Expand search)
any decrease » and decrease (Expand search), can decrease (Expand search), may decrease (Expand search)
decrease α » decrease _ (Expand search), decrease β (Expand search), decrease in (Expand search)
α decrease » _ decrease (Expand search), to decrease (Expand search), or decrease (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 α decrease spp decrease ) OR ( decrease any decrease lesion pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease α decrease spp decrease ) OR ( decrease any decrease lesion pattern ))*.