Perhaps you should try some spelling variations:
"a a decrease" » "a al decrease" (Expand Search), "a la decrease" (Expand Search), "a a decreased" (Expand Search), "a a increase" (Expand Search)
"50 ms decrease" » "50 ms decreased" (Expand Search), "50 ms increase" (Expand Search)
"_ co decrease" » "_ co decreased" (Expand Search), "_ co increase" (Expand Search)
"_ breast decrease" » "_ breast decreased" (Expand Search), "_ breast increase" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("50 ms decrease") OR ((((("_ co decrease") OR ("_ breast decrease"))) OR ("a a decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 ms decrease\") OR (((((\"_ co decrease\") OR (\"_ breast decrease\"))) OR (\"a a decrease\"))))*".
• Removing quotes may allow a broader search: (( 50 ms decrease ) OR ((((( _ co decrease ) OR ( _ breast decrease ))) OR ( a a decrease ))))*.