Perhaps you should try some spelling variations:
decrease reasoning » decrease replacing (Expand search), decreases weaning (Expand search), defeasible reasoning (Expand search)
reasoning problem » reasoning problems (Expand search), learning problem (Expand search), planning problem (Expand search)
decrease not » decrease of (Expand search), decrease at (Expand search), decrease on (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt decrease » and decrease (Expand search), any decrease (Expand search), salt decreases (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 NOT decrease reasoning problem ) OR ( decrease akt decrease _ decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not decrease reasoning problem ) OR ( decrease akt decrease _ decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not decrease reasoning problem ) OR ( decrease akt decrease _ decrease ))*.