Perhaps you should try some spelling variations:
"c largest decrease" » "c marked decrease" (Expand Search), "_ largest decrease" (Expand Search), "a largest decrease" (Expand Search), "b largest decrease" (Expand Search)
"c larger decrease" » "c marked decrease" (Expand Search), "_ larger decrease" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "a larger decrease" (Expand Search), "b larger decrease" (Expand Search)
"c large degree" » "c change degree" (Expand Search), "_ large degree" (Expand Search), "a large degree" (Expand Search), "b large degree" (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 ((("c larger decrease") OR ("c large degree"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"c largest decrease\") OR (((\"c larger decrease\") OR (\"c large degree\"))))".
• Removing quotes may allow a broader search: (( c largest decrease ) OR ((( c larger decrease ) OR ( c large degree )))).
• Adding a wildcard symbol may retrieve word variants: (("c largest decrease") OR ((("c larger decrease") OR ("c large degree"))))*.