Perhaps you should try some spelling variations:
decrease lipid » increases lipid (Expand search), increased lipid (Expand search)
lipid decrease » rapid decrease (Expand search), ligand decrease (Expand search), limb decrease (Expand search)
decrease cell » decreases cell (Expand search)
cell decrease » cells decrease (Expand search), cells decreases (Expand search), will decrease (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
risk objects » risk subjects (Expand search), disk object (Expand search), first objects (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 cell decrease OR decrease ) OR ( decrease lipid decrease risk objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease cell decrease OR decrease ) OR ( decrease lipid decrease risk objects ))*.