Perhaps you should try some spelling variations:
decrease faster » decrease after (Expand search), decrease further (Expand search), decreased after (Expand search)
faster decrease » rate decrease (Expand search)
decreased risk » increased risk (Expand search), decreased in (Expand search)
akt decreased » and decreased (Expand search), are decreased (Expand search), not decreased (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
risk effect » risk effects (Expand search), risks effect (Expand search), risks affect (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 faster decrease AND decrease ) OR ( decrease akt decreased risk effect ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease faster decrease AND decrease ) OR ( decrease akt decreased risk effect ))*.