Perhaps you should try some spelling variations:
decreased cooperation » decrease cooperation (Expand search), decreased proliferation (Expand search), decreased oxidation (Expand search)
cooperation projects » cooperation project (Expand search), cooperative projects (Expand search), conservation projects (Expand search)
on decreased » in decreased (Expand search), of decreased (Expand search), on deceased (Expand search)
decrease on » decrease of (Expand search), decrease or (Expand search), decrease and (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain decrease (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 on decreased cooperation projects ) OR ( decrease to decrease in decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease on decreased cooperation projects ) OR ( decrease to decrease in decrease ))*.