Perhaps you should try some spelling variations:
"3 cases increased" » "3 rate increased" (Expand Search), "3 levels increased" (Expand Search), "_ cases increased" (Expand Search), "19 cases increased" (Expand Search)
"i large decrease" » "i marked decrease" (Expand Search), "i large increases" (Expand Search), "i large degree" (Expand Search), "a large decrease" (Expand Search), "via large decrease" (Expand Search), "i larvae decrease" (Expand Search)
"_ large decrease" » "_ marked decrease" (Expand Search), "_ large increases" (Expand Search), "_ large degree" (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: "((((\"i large decrease\") OR (\"_ large decrease\"))) OR (\"3 cases increased\"))~".
• Removing quotes may allow a broader search: (((( i large decrease ) OR ( _ large decrease ))) OR ( 3 cases increased ))~.
• Adding a wildcard symbol may retrieve word variants: (((("i large decrease") OR ("_ large decrease"))) OR ("3 cases increased"))*.