Perhaps you should try some spelling variations:
"a greatest decrease" » "a treatment decreased" (Expand Search), "a greater increase" (Expand Search), "a greater decrease" (Expand Search)
"a latest decrease" » "a largest decrease" (Expand Search), "a largest decreases" (Expand Search), "a latency decreased" (Expand Search), "a latent decrease" (Expand Search), "_ latest decrease" (Expand Search), "_ latent decrease" (Expand Search)
"c large decrease" » "c larger decrease" (Expand Search), "c marked decrease" (Expand Search), "c large increases" (Expand Search), "_ large decrease" (Expand Search), "a large decrease" (Expand Search), "b 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: (((("a latest decrease") OR ("a greatest decrease"))) OR ("c large decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"a latest decrease\") OR (\"a greatest decrease\"))) OR (\"c large decrease\"))".
• Removing quotes may allow a broader search: (((( a latest decrease ) OR ( a greatest decrease ))) OR ( c large decrease )).
• Adding a wildcard symbol may retrieve word variants: (((("a latest decrease") OR ("a greatest decrease"))) OR ("c large decrease"))*.