Perhaps you should try some spelling variations:
"a showed increases" » "a showed increased" (Expand Search), "a fold increases" (Expand Search), "2 showed increases" (Expand Search), "_ showed increases" (Expand Search), "3 showed increases" (Expand Search)
"c marked decrease" » "c marked increase" (Expand Search), "_ marked decrease" (Expand Search), "a marked decrease" (Expand Search), "n marked decrease" (Expand Search)
"c larger decrease" » "_ larger decrease" (Expand Search), "c large decrease" (Expand Search), "_ large decrease" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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