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)
"b large decrease" » "b large increases" (Expand Search), "b large degree" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "i large decrease" (Expand Search)
"c greater increase" » "_ greater increase" (Expand Search), "a greater increase" (Expand Search), "c greer increase" (Expand Search), "c greater increased" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("b large decrease") OR ("c marked decrease"))) OR ("c greater increase"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"b large decrease\") OR (\"c marked decrease\"))) OR (\"c greater increase\"))*".
• Removing quotes may allow a broader search: (((( b large decrease ) OR ( c marked decrease ))) OR ( c greater increase ))*.