Perhaps you should try some spelling variations:
"a largest decrease" » "a largest decreases" (Expand Search), "a larger decrease" (Expand Search), "a marked decrease" (Expand Search), "_ largest decrease" (Expand Search), "a large decrease" (Expand Search), "a latest decrease" (Expand Search)
"i cases increased" » "i rate increased" (Expand Search), "i levels increased" (Expand Search), "_ cases increased" (Expand Search), "3 cases increased" (Expand Search), "8 cases increased" (Expand Search)
"i large decrease" » "i marked decrease" (Expand Search), "i large increases" (Expand Search), "i large degree" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "via large 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: "((\"i cases increased\") OR (((\"a largest decrease\") OR (\"i large decrease\"))))~".
• Removing quotes may allow a broader search: (( i cases increased ) OR ((( a largest decrease ) OR ( i large decrease ))))~.
• Adding a wildcard symbol may retrieve word variants: (("i cases increased") OR ((("a largest decrease") OR ("i large decrease"))))*.