Perhaps you should try some spelling variations:
decreased running » decreased during (Expand search), decreases weaning (Expand search)
running objects » counting objects (Expand search), cutting objects (Expand search), using objects (Expand search)
risk decreased » risk decreases (Expand search), is decreased (Expand search), cross decreased (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
decrease hiv » decrease in (Expand search), decrease their (Expand search), decreased high (Expand search)
hiv decrease » via decrease (Expand search), hiv increase (Expand search), will decrease (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 hiv decrease of decrease ) OR ( decrease risk decreased running objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease hiv decrease of decrease ) OR ( decrease risk decreased running objects ))*.