Perhaps you should try some spelling variations:
"chd cases increased" » "chd rate increased" (Expand Search), "chd levels increased" (Expand Search), "ad cases increased" (Expand Search)
"n marked decrease" » "n marked increase" (Expand Search), "_ marked decrease" (Expand Search), "a marked decrease" (Expand Search), "_ market decrease" (Expand Search)
"c large decrease" » "c large increases" (Expand Search), "c large degree" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "i 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: (("chd cases increased") OR ((("c large decrease") OR ("n marked decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"chd cases increased\") OR (((\"c large decrease\") OR (\"n marked decrease\"))))".
• Removing quotes may allow a broader search: (( chd cases increased ) OR ((( c large decrease ) OR ( n marked decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("chd cases increased") OR ((("c large decrease") OR ("n marked decrease"))))*.