Perhaps you should try some spelling variations:
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
risk decrease » risk decreases (Expand search), risk increase (Expand search), break decrease (Expand search)
decrease word » decrease work (Expand search), decrease food (Expand search), decrease or (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » and decrease (Expand search), can increase (Expand search), to decrease (Expand search)
word object » world objects (Expand search), good object (Expand search), sound object (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 AND decrease risk decrease ) OR ( decrease can decrease word object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease AND decrease risk decrease ) OR ( decrease can decrease word object ))*.