Perhaps you should try some spelling variations:
decrease theory » decrease their (Expand search), decrease the (Expand search), decreased memory (Expand search)
theory decrease » the decrease (Expand search), therapy decreases (Expand search), memory decreases (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)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
decrease or » decrease of (Expand search), decrease on (Expand search), decrease pro (Expand search)
or problem » or problems (Expand search), cover problem (Expand search), color problem (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 lipid decrease OR problem ) OR ( decrease AND decrease theory decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease lipid decrease or problem ) OR ( decrease and decrease theory decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lipid decrease or problem ) OR ( decrease and decrease theory decrease ))*.