Perhaps you should try some spelling variations:
faster decrease » rate decrease (Expand search)
decrease faster » decrease after (Expand search), decrease further (Expand search), decreased after (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease hiv (Expand search)
risk decrease » risk decreases (Expand search), risk increase (Expand search), break decrease (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain decrease (Expand search)
akt pattern » gait pattern (Expand search), fast pattern (Expand search), t pattern (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 risk decrease in decrease ) OR ( decrease faster decrease akt pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease risk decrease in decrease ) OR ( decrease faster decrease akt pattern ))*.