Perhaps you should try some spelling variations:
decrease clogging » decrease lodging (Expand search), decrease flooding (Expand search), decrease owing (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 food » decreases food (Expand search), increase food (Expand search), decreases blood (Expand search)
food decrease » food decreases (Expand search), foods decreases (Expand search), flow decrease (Expand search)
clogging of » cloning of (Expand search), closing of (Expand search), logging on (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 rate decrease food decrease ) OR ( decrease _ decrease clogging of ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rate decrease food decrease ) OR ( decrease _ decrease clogging of ))*.