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

Try widening your search to All Fields.

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