Perhaps you should try some spelling variations:
"b largest decrease" » "b larger decrease" (Expand Search), "_ largest decrease" (Expand Search), "b large decrease" (Expand Search)
"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 larger decrease" (Expand Search), "c large increases" (Expand Search), "c large degree" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "b large 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 large decrease") OR ("b largest decrease"))) OR ("c marked decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"c large decrease\") OR (\"b largest decrease\"))) OR (\"c marked decrease\"))".
• Removing quotes may allow a broader search: (((( c large decrease ) OR ( b largest decrease ))) OR ( c marked decrease )).
• Adding a wildcard symbol may retrieve word variants: (((("c large decrease") OR ("b largest decrease"))) OR ("c marked decrease"))*.