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