Perhaps you should try some spelling variations:
lipid decrease » rapid decrease (Expand search), ligand decrease (Expand search), limb decrease (Expand search)
decrease lipid » increases lipid (Expand search), increased lipid (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
risk decrease » risk decreases (Expand search), risk increase (Expand search), break decrease (Expand search)
decrease deaf » decreases leaf (Expand search), decrease fear (Expand search), decrease fetal (Expand search)
deaf subjects » deaf subject (Expand search), of subjects (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 to decrease risk decrease ) OR ( decrease lipid decrease deaf subjects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease to decrease risk decrease ) OR ( decrease lipid decrease deaf subjects ))*.