Perhaps you should try some spelling variations:
"_ largest decrease" » "_ largest decreases" (Expand Search), "_ larger decrease" (Expand Search), "_ marked decrease" (Expand Search), "_ large decrease" (Expand Search)
"ic cases increased" » "ic rate increased" (Expand Search), "ic levels increased" (Expand Search), "19 cases increased" (Expand Search), "_ cases increased" (Expand Search), "3 cases increased" (Expand Search)
"auc values decrease" » "auc values increased" (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: "((((\"ic cases increased\") OR (\"auc values decrease\"))) OR (\"_ largest decrease\"))~".
• Removing quotes may allow a broader search: (((( ic cases increased ) OR ( auc values decrease ))) OR ( _ largest decrease ))~.
• Adding a wildcard symbol may retrieve word variants: (((("ic cases increased") OR ("auc values decrease"))) OR ("_ largest decrease"))*.