Perhaps you should try some spelling variations:
theory decreased » the decreased (Expand search), tumors decreased (Expand search), therapy decreases (Expand search)
decrease theory » decrease their (Expand search), decrease the (Expand search), decreased memory (Expand search)
decreased fear » decreased heart (Expand search), decreased mean (Expand search), decreased after (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)
fear objects » learn objects (Expand search), linear objects (Expand search), earth objects (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 AND decrease toc decrease ) OR ( decrease theory decreased fear objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease AND decrease toc decrease ) OR ( decrease theory decreased fear objects ))*.