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 their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
decrease hiv » decrease in (Expand search), decreased high (Expand search), decrease with (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)
hiv objects » in objects (Expand search), bim objects (Expand search), big 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 lipid decrease to decrease ) OR ( decrease their decrease hiv objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lipid decrease to decrease ) OR ( decrease their decrease hiv objects ))*.