Perhaps you should try some spelling variations:
decrease system » decreases systemic (Expand search), release system (Expand search), disease system (Expand search)
system decrease » system decreases (Expand search), system increase (Expand search), symptom decrease (Expand search)
decrease fear » decreased fear (Expand search), decrease fetal (Expand search), decreased heart (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to decrease (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), not decrease (Expand search), any decrease (Expand search)
fear after » year after (Expand search), pear after (Expand search), wear after (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 system decrease the decrease ) OR ( decrease akt decrease fear after ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease system decrease the decrease ) OR ( decrease akt decrease fear after ))*.