Perhaps you should try some spelling variations:
decrease cooperative » decrease cooperation (Expand search), disease cooperative (Expand search), decreases postoperative (Expand search)
cooperative projects » cooperative process (Expand search), cooperation project (Expand search), cooperative effects (Expand search)
decrease walking » increase walking (Expand search), decrease during (Expand search), decrease lodging (Expand search)
walking decrease » walking decreases (Expand search), warming decreases (Expand search), taping decrease (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to decrease (Expand search), and 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 walking decrease cooperative projects ) OR ( decrease _ decrease the decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease walking decrease cooperative projects ) OR ( decrease _ decrease the decrease ))*.