Perhaps you should try some spelling variations:
decreased cooperation » decrease cooperation (Expand search), decreased proliferation (Expand search), decreased oxidation (Expand search)
cooperation process » cooperative process (Expand search), operation process (Expand search), cooperation projects (Expand search)
in decreased » is decreased (Expand search), in deceased (Expand search), and decreased (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decreased to (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (Expand search)
decrease on » decrease of (Expand search), decrease or (Expand search), decrease and (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or 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 in decreased cooperation process ) OR ( decrease toc decrease on decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease in decreased cooperation process ) OR ( decrease toc decrease on decrease ))*.