Perhaps you should try some spelling variations:
lesions decreasing » lesions decrease (Expand search), lesions decreased (Expand search), using decreasing (Expand search)
decrease lesions » disease lesions (Expand search), decreased response (Expand search), decrease adhesion (Expand search)
decreasing costs » decreasing cost (Expand search), decreasing rest (Expand search), decrease costs (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain decrease (Expand search)
costs based » cost based (Expand search), cots based (Expand search), hosts based (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 of decrease in decrease ) OR ( decrease lesions decreasing costs based ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease of decrease in decrease ) OR ( decrease lesions decreasing costs based ))*.