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 cases increased" » "c rate increased" (Expand Search), "c levels increased" (Expand Search), "ic cases increased" (Expand Search), "_ cases increased" (Expand Search), "3 cases increased" (Expand Search)
"i large decrease" » "i large increases" (Expand Search), "i large degree" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "via large decrease" (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: (((("i large decrease") OR ("c marked decrease"))) OR ("c cases increased"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"i large decrease\") OR (\"c marked decrease\"))) OR (\"c cases increased\"))*".
• Removing quotes may allow a broader search: (((( i large decrease ) OR ( c marked decrease ))) OR ( c cases increased ))*.