Perhaps you should try some spelling variations:
"ct largest decrease" » "ct largest decreases" (Expand Search), "ct larger decrease" (Expand Search), "ct marked decrease" (Expand Search), "_ largest decrease" (Expand Search)
"c2 cases increased" » "c2 rate increased" (Expand Search), "c2 levels increased" (Expand Search), "152 cases increased" (Expand Search), "chd cases increased" (Expand Search), "123 cases increased" (Expand Search)
"_ large decrease" » "_ marked decrease" (Expand Search), "_ large increases" (Expand Search), "_ large degree" (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: "((\"c2 cases increased\") OR (((\"ct largest decrease\") OR (\"_ large decrease\"))))~".
• Removing quotes may allow a broader search: (( c2 cases increased ) OR ((( ct largest decrease ) OR ( _ large decrease ))))~.
• Adding a wildcard symbol may retrieve word variants: (("c2 cases increased") OR ((("ct largest decrease") OR ("_ large decrease"))))*.