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