Perhaps you should try some spelling variations:
"5 nn decrease" » "k nn decrease" (Expand Search), "_ nn decrease" (Expand Search), "5 nn decreased" (Expand Search), "5 nn increase" (Expand Search)
"50 ms decrease" » "50 ms decreased" (Expand Search), "50 ms increase" (Expand Search)
"a non decrease" » "a non decreased" (Expand Search), "a non increase" (Expand Search)
"_ non decrease" » "_ non decreased" (Expand Search), "_ non 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 ((("5 nn decrease") OR ((("a non decrease") OR ("_ non decrease"))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 ms decrease\") OR (((\"5 nn decrease\") OR (((\"a non decrease\") OR (\"_ non decrease\"))))))*".
• Removing quotes may allow a broader search: (( 50 ms decrease ) OR ((( 5 nn decrease ) OR ((( a non decrease ) OR ( _ non decrease ))))))*.