Perhaps you should try some spelling variations:
"c largest decrease" » "c largest decreases" (Expand Search), "c marked decrease" (Expand Search), "_ largest decrease" (Expand Search), "c large decrease" (Expand Search)
"c larger decrease" » "c marked decrease" (Expand Search), "_ larger decrease" (Expand Search), "c large decrease" (Expand Search), "_ large decrease" (Expand Search)
"c2 greater increase" » "_ greater increase" (Expand Search), "a greater increase" (Expand Search), "much greater increase" (Expand Search), "c2 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: (((("c largest decrease") OR ("c larger decrease"))) OR ("c2 greater increase"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"c largest decrease\") OR (\"c larger decrease\"))) OR (\"c2 greater increase\"))".
• Removing quotes may allow a broader search: (((( c largest decrease ) OR ( c larger decrease ))) OR ( c2 greater increase )).
• Adding a wildcard symbol may retrieve word variants: (((("c largest decrease") OR ("c larger decrease"))) OR ("c2 greater increase"))*.