Perhaps you should try some spelling variations:
decrease intestinal » increased intestinal (Expand search), necrose intestinal (Expand search)
intestinal abscess » intestinal antes (Expand search), intestinal ascaris (Expand search), intestinal obscura (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to 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 _ decrease intestinal abscess ) OR ( decrease rate decrease rate decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease intestinal abscess ) OR ( decrease rate decrease rate decrease ))*.