Perhaps you should try some spelling variations:
"auc values decrease" » "auc values increased" (Expand Search), "auc largest 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)
"c marked decrease" » "c marked increase" (Expand Search), "_ marked decrease" (Expand Search), "a marked decrease" (Expand Search), "n marked 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: "((((\"auc values decrease\") OR (\"i cases increased\"))) OR (\"c marked decrease\"))~".
• Removing quotes may allow a broader search: (((( auc values decrease ) OR ( i cases increased ))) OR ( c marked decrease ))~.
• Adding a wildcard symbol may retrieve word variants: (((("auc values decrease") OR ("i cases increased"))) OR ("c marked decrease"))*.