Perhaps you should try some spelling variations:
decrease swallowing » disease swallowing (Expand search), decrease following (Expand search), decrease walking (Expand search)
swallowing pattern » swallowing after (Expand search)
decrease further » increase further (Expand search), disease further (Expand search), decrease the (Expand search)
further decrease » further increase (Expand search), faster decrease (Expand search), the decrease (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » and decrease (Expand search), can increase (Expand search), to decrease (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.

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