Perhaps you should try some spelling variations:
decrease swallowing » disease swallowing (Expand search), decrease following (Expand search), decrease walking (Expand search)
swallowing patterns » swallowing pattern (Expand search), swallowing after (Expand search), calling patterns (Expand search)
decrease human » increase human (Expand search), disease human (Expand search), decrease asian (Expand search)
human decrease » human deceased (Expand search), human increase (Expand search), human disease (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 or » decrease of (Expand search), decrease on (Expand search), decrease pro (Expand search)
or decrease » not decrease (Expand search), to decrease (Expand search), _ 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 human decrease rate decrease ) OR ( decrease OR decrease swallowing patterns ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease human decrease rate decrease ) OR ( decrease or decrease swallowing patterns ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease human decrease rate decrease ) OR ( decrease or decrease swallowing patterns ))*.