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