Perhaps you should try some spelling variations:
decreases aggression » decreases expression (Expand search), decrease aggressive (Expand search), increased aggression (Expand search)
aggression decrease » expression decreases (Expand search), aggression case (Expand search), aggression depression (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decreased to (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not 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 at » decrease akt (Expand search), decrease in (Expand search), decrease of (Expand search)
at object » art object (Expand search), an object (Expand search), art objects (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: (( decreases aggression decrease toc decrease ) OR ( decrease AND decrease at object ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decreases aggression decrease toc decrease ) OR ( decrease and decrease at object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreases aggression decrease toc decrease ) OR ( decrease and decrease at object ))*.