Perhaps you should try some spelling variations:
"c largest decrease" » "c larger decrease" (Expand Search), "_ largest decrease" (Expand Search), "c large decrease" (Expand Search)
"a marked decrease" » "a marked increase" (Expand Search), "_ marked decrease" (Expand Search), "a market decrease" (Expand Search), "_ market decrease" (Expand Search)
"a marker decrease" » "a larger decrease" (Expand Search), "a marked increase" (Expand Search), "a markedly decreased" (Expand Search), "_ marker decrease" (Expand Search), "_ markers decrease" (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 (((\"a marked decrease\") OR (\"a marker decrease\"))))~".
• Removing quotes may allow a broader search: (( c largest decrease ) OR ((( a marked decrease ) OR ( a marker decrease ))))~.
• Adding a wildcard symbol may retrieve word variants: (("c largest decrease") OR ((("a marked decrease") OR ("a marker decrease"))))*.