Perhaps you should try some spelling variations:
decrease comprehension » disease comprehension (Expand search), discourse comprehension (Expand search), sentence comprehension (Expand search)
comprehension process » comprehension test (Expand search)
decrease rapidly » disease rapidly (Expand search), decrease lipid (Expand search)
rapidly decrease » rapid increase (Expand search), brazil decrease (Expand search), taping decrease (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease and decrease comprehension process ) OR ( decrease AND decrease rapidly decrease ))~.