Perhaps you should try some spelling variations:
retention patterns » retention pattern (Expand search), repetition patterns (Expand search), prehension patterns (Expand search)
decrease retention » decrease prevention (Expand search), decrease predation (Expand search), decreases permeation (Expand search)
decrease walking » increase walking (Expand search), decreases weaning (Expand search), decrease during (Expand search)
walking decrease » walking decreases (Expand search), warming decreases (Expand search), taping decrease (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), not 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 _ decrease walking decrease ) OR ( decrease that decrease retention patterns ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease walking decrease ) OR ( decrease that decrease retention patterns ))*.