Perhaps you should try some spelling variations:
optical processing » spatial processing (Expand search), lexical processing (Expand search), chemical processing (Expand search)
decrease optical » decrease physical (Expand search), decrease fetal (Expand search), decrease total (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)
decreased to » decreased the (Expand search), decreased tgf (Expand search), decreased in (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 optical processing ) OR ( decreased to decrease _ decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lipid decrease optical processing ) OR ( decreased to decrease _ decrease ))*.