Perhaps you should try some spelling variations:
decrease flooding » decrease following (Expand search), decrease lodging (Expand search), decrease food (Expand search)
rats decreases » and decreases (Expand search), but decreases (Expand search), stress decreases (Expand search)
flooding based » loading based (Expand search), flooding case (Expand search), flooding causes (Expand search)
decrease rats » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » not increase (Expand search), and decrease (Expand search), the decrease (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 NOT decrease rats decreases ) OR ( decrease to decrease flooding based ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not decrease rats decreases ) OR ( decrease to decrease flooding based ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not decrease rats decreases ) OR ( decrease to decrease flooding based ))*.