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