Perhaps you should try some spelling variations:
"c largest decrease" » "c larger decrease" (Expand Search), "c marked decrease" (Expand Search), "_ largest decrease" (Expand Search), "a largest decrease" (Expand Search), "b largest decrease" (Expand Search)
"c large decrease" » "c larger decrease" (Expand Search), "c marked decrease" (Expand Search), "c large increases" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "b large decrease" (Expand Search)
"a case increased" » "a cases increased" (Expand Search), "a care increased" (Expand Search), "a causes increased" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("c largest decrease") OR ("c large decrease"))) OR ("a case increased"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"c largest decrease\") OR (\"c large decrease\"))) OR (\"a case increased\"))".
• Removing quotes may allow a broader search: (((( c largest decrease ) OR ( c large decrease ))) OR ( a case increased )).
• Adding a wildcard symbol may retrieve word variants: (((("c largest decrease") OR ("c large decrease"))) OR ("a case increased"))*.