Perhaps you should try some spelling variations:
decrease spatial » decrease survival (Expand search), decrease striatal (Expand search), decrease asian (Expand search)
decrease lipid » increases lipid (Expand search), increased lipid (Expand search)
lipid decrease » rapid decrease (Expand search), ligand decrease (Expand search), limb decrease (Expand search)
spatial effect » spatial effects (Expand search), spatial neglect (Expand search), spatial extent (Expand search)
decrease hiv » decrease in (Expand search), decrease their (Expand search), decreased high (Expand search)
hiv decrease » via decrease (Expand search), hiv increase (Expand search), will decrease (Expand search)
decrease may » decrease at (Expand search), decrease by (Expand search), decrease human (Expand search)
may decrease » may increase (Expand search), can decrease (Expand search), to decrease (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 hiv decrease ) OR ( decrease may decrease spatial effect ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lipid decrease hiv decrease ) OR ( decrease may decrease spatial effect ))*.