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