Perhaps you should try some spelling variations:
decrease swallowing » disease swallowing (Expand search), decrease following (Expand search), decrease walking (Expand search)
decrease decrease » decrease release (Expand search), decreases disease (Expand search), disease decreases (Expand search)
swallowing using » swallowing in (Expand search), swallowing and (Expand search)
decrease ratio » decreased ratio (Expand search), decrease at (Expand search), decreased rate (Expand search)
ratio decrease » rate decrease (Expand search), rapid decrease (Expand search), ratio increase (Expand search)
decrease after » disease after (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)

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

• Removing quotes may allow a broader search: (( decrease ratio decrease swallowing using ) OR ( decrease not decrease decrease after ))~.