Perhaps you should try some spelling variations:
"a marker decrease" » "a marked decrease" (Expand Search), "a larger decrease" (Expand Search), "a marked increase" (Expand Search), "_ marker decrease" (Expand Search), "_ markers decrease" (Expand Search)
"a rate increased" » "a greater increase" (Expand Search), "_ rate increased" (Expand Search), "a rare increased" (Expand Search)
"i large decrease" » "i marked decrease" (Expand Search), "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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"a rate increased\") OR (((\"a marker decrease\") OR (\"i large decrease\"))))~".
• Removing quotes may allow a broader search: (( a rate increased ) OR ((( a marker decrease ) OR ( i large decrease ))))~.
• Adding a wildcard symbol may retrieve word variants: (("a rate increased") OR ((("a marker decrease") OR ("i large decrease"))))*.