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