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 flow » decreases flow (Expand search), decrease food (Expand search), decreases low (Expand search)
flow decrease » flow increase (Expand search), to decrease (Expand search), not decrease (Expand search)
decrease low » decreases low (Expand search), decreases flow (Expand search), decrease of (Expand search)
decrease or » decrease of (Expand search), decrease on (Expand search), decrease pro (Expand search)
or decrease » not decrease (Expand search), to decrease (Expand search), _ decrease (Expand search)
low objects » how objects (Expand search), wow objects (Expand search), new objects (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease lesions decrease OR decrease ) OR ( decrease flow decrease low objects ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease lesions decrease or decrease ) OR ( decrease flow decrease low objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lesions decrease or decrease ) OR ( decrease flow decrease low objects ))*.