Perhaps you should try some spelling variations:
"c marked decrease" » "c marked increase" (Expand Search), "_ marked decrease" (Expand Search), "n marked decrease" (Expand Search), "_ market 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)

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