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), "c large decrease" (Expand Search)
"b large decrease" » "b marked decrease" (Expand Search), "b large increases" (Expand Search), "b large degree" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "i large decrease" (Expand Search)
"9 age increased" » "9 rate increased" (Expand Search), "9 use increased" (Expand Search), "9 large increases" (Expand Search), "_ age increased" (Expand Search), "g age 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 ((("b large decrease") OR ("9 age increased"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"c largest decrease\") OR (((\"b large decrease\") OR (\"9 age increased\"))))".
• Removing quotes may allow a broader search: (( c largest decrease ) OR ((( b large decrease ) OR ( 9 age increased )))).
• Adding a wildcard symbol may retrieve word variants: (("c largest decrease") OR ((("b large decrease") OR ("9 age increased"))))*.