Perhaps you should try some spelling variations:
"c largest decrease" » "c larger decrease" (Expand Search), "_ largest decrease" (Expand Search), "c 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)
"c2 cases increased" » "c2 levels increased" (Expand Search), "c2 cycles increases" (Expand Search), "822 cases increased" (Expand Search), "629 cases increased" (Expand Search), "123 cases 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 marked decrease"))) OR ("c2 cases increased"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"c largest decrease\") OR (\"c marked decrease\"))) OR (\"c2 cases increased\"))*".
• Removing quotes may allow a broader search: (((( c largest decrease ) OR ( c marked decrease ))) OR ( c2 cases increased ))*.