Perhaps you should try some spelling variations:
decrease cooperation » defense cooperation (Expand search), decrease proliferation (Expand search), decrease migration (Expand search)
cooperation projects » cooperation project (Expand search), cooperative projects (Expand search), conservation projects (Expand search)
decrease strain » increase strain (Expand search), decreases pain (Expand search), decreased brain (Expand search)
strain decrease » stress decreases (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)
decrease or » decrease of (Expand search), decrease on (Expand search), decrease pro (Expand search)
or decrease » to decrease (Expand search), _ decrease (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 OR decrease cooperation projects ) OR ( decrease strain decrease NOT decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease or decrease cooperation projects ) OR ( decrease strain decrease not decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease or decrease cooperation projects ) OR ( decrease strain decrease not decrease ))*.