Perhaps you should try some spelling variations:
decreases walking » decrease walking (Expand search), increases walking (Expand search), increase walking (Expand search)
walking decrease » walking decreases (Expand search), warming decreases (Expand search), taping decrease (Expand search)
decrease buried » decrease burden (Expand search), decrease during (Expand search), decrease observed (Expand search)
risk decreases » diet decreases (Expand search), life decreases (Expand search), oic decreases (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
buried object » buried objects (Expand search), based object (Expand search), marked object (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (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 decreases walking decrease ) OR ( decrease of decrease buried object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease risk decreases walking decrease ) OR ( decrease of decrease buried object ))*.