Perhaps you should try some spelling variations:
"c largest decrease" » "c largest decreases" (Expand Search), "c larger decrease" (Expand Search), "c marked decrease" (Expand Search), "_ largest decrease" (Expand Search), "a largest decrease" (Expand Search), "i largest decrease" (Expand Search)
"c rate increased" » "c greater increase" (Expand Search), "_ rate increased" (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)

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

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