Perhaps you should try some spelling variations:
decrease spawning » release spawning (Expand search), decrease owing (Expand search), decreases weaning (Expand search)
spawning patterns » learning patterns (Expand search), stacking patterns (Expand search), eating patterns (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 rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to decrease (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease rate decrease walking decrease ) OR ( decrease AND decrease spawning patterns ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease rate decrease walking decrease ) OR ( decrease and decrease spawning patterns ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rate decrease walking decrease ) OR ( decrease and decrease spawning patterns ))*.