Perhaps you should try some spelling variations:
"50 ms decrease" » "50 ms decreased" (Expand Search), "50 ms increase" (Expand Search)
"6 nm decrease" » "6 nm decreased" (Expand Search), "6 nm increase" (Expand Search)
"_ e decrease" » "_ e decreased" (Expand Search), "_ e increase" (Expand Search)
"_ reef decrease" » "_ reef decreased" (Expand Search), "_ reef increase" (Expand Search), "_ reefs decrease" (Expand Search), "_ reem decrease" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"50 ms decrease\") OR (\"6 nm decrease\"))) OR (((\"_ e decrease\") OR (\"_ reef decrease\"))))~".
• Removing quotes may allow a broader search: (((( 50 ms decrease ) OR ( 6 nm decrease ))) OR ((( _ e decrease ) OR ( _ reef decrease ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("50 ms decrease") OR ("6 nm decrease"))) OR ((("_ e decrease") OR ("_ reef decrease"))))*.