Perhaps you should try some spelling variations:
decrease intestinal » increased intestinal (Expand search), necrose intestinal (Expand search)
intestinal aviaria » intestinal primaria (Expand search), intestinal bacteria (Expand search), intestinal atresia (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
decrease il » decreased il (Expand search), decrease in (Expand search), decrease hiv (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (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 NOT decrease intestinal aviaria ) OR ( decrease il decrease their decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease NOT decrease intestinal aviaria ) OR ( decrease il decrease their decrease ))*.