Perhaps you should try some spelling variations:
"via largest decrease" » "via largest decreases" (Expand Search), "via larger decrease" (Expand Search), "via marked decrease" (Expand Search), "via large decrease" (Expand Search), "vi_ largest decrease" (Expand Search)
"i large decrease" » "i marked decrease" (Expand Search), "i large increases" (Expand Search), "i large degree" (Expand Search), "_ large decrease" (Expand Search), "via large decrease" (Expand Search), "i larvae decrease" (Expand Search)
"a large increase" » "a large increases" (Expand Search), "a marked increase" (Expand Search), "_ large increase" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("via largest decrease") OR ("i large decrease"))) OR ("a large increase"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"via largest decrease\") OR (\"i large decrease\"))) OR (\"a large increase\"))".
• Removing quotes may allow a broader search: (((( via largest decrease ) OR ( i large decrease ))) OR ( a large increase )).
• Adding a wildcard symbol may retrieve word variants: (((("via largest decrease") OR ("i large decrease"))) OR ("a large increase"))*.