Perhaps you should try some spelling variations:
their decreased » the decreased (Expand search), the decrease (Expand search), tumors decreased (Expand search)
decreased brain » decreases brain (Expand search), increased brain (Expand search), decreased in (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
brain decrease » brain decreases (Expand search), brazil decrease (Expand search), strain decrease (Expand search)
decrease break » decreases breast (Expand search), decreases areas (Expand search), decrease treg (Expand search)
break decrease » urea decrease (Expand search)
decrease an » decrease and (Expand search), decrease in (Expand search), decrease at (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 their decreased brain decrease ) OR ( decrease break decrease an object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease their decreased brain decrease ) OR ( decrease break decrease an object ))*.