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)
"i large decrease" » "i marked decrease" (Expand Search), "i large increases" (Expand Search), "i large degree" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "via large decrease" (Expand Search)
"9 use increased" » "9 cases increased" (Expand Search), "9 also increased" (Expand Search), "9 rate increased" (Expand Search), "_ use increased" (Expand Search), "g use increased" (Expand Search), "i use increased" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"c largest decrease\") OR (((\"i large decrease\") OR (\"9 use increased\"))))~".
• Removing quotes may allow a broader search: (( c largest decrease ) OR ((( i large decrease ) OR ( 9 use increased ))))~.
• Adding a wildcard symbol may retrieve word variants: (("c largest decrease") OR ((("i large decrease") OR ("9 use increased"))))*.