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 pp decrease" » "50 pp decreased" (Expand Search), "50 pp increase" (Expand Search)
"5 μ decrease" » "5 μ decreased" (Expand Search), "5 μ increase" (Expand Search)
"a point decrease" » "a point decreased" (Expand Search), "a point 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 pp decrease") OR ("5 μ decrease"))) OR ((("5 nn decrease") OR ("a point decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"50 pp decrease\") OR (\"5 μ decrease\"))) OR (((\"5 nn decrease\") OR (\"a point decrease\"))))*".
• Removing quotes may allow a broader search: (((( 50 pp decrease ) OR ( 5 μ decrease ))) OR ((( 5 nn decrease ) OR ( a point decrease ))))*.