Perhaps you should try some spelling variations:
"k nn decrease" » "k _ decrease" (Expand Search)
"5 wt decrease" » "5 _ decrease" (Expand Search), "5 ht decrease" (Expand Search), "2 wt decrease" (Expand Search), "i wt decrease" (Expand Search)
"_ wt decrease" » "_ _ decrease" (Expand Search)
"10 a decrease" » "10 _ decrease" (Expand Search), "10 _ decreased" (Expand Search), "10 _ decreases" (Expand Search), "19 a decrease" (Expand Search), "1 a 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: "((\"k nn decrease\") OR (((\"10 a decrease\") OR (((\"5 wt decrease\") OR (\"_ wt decrease\"))))))~".
• Removing quotes may allow a broader search: (( k nn decrease ) OR ((( 10 a decrease ) OR ((( 5 wt decrease ) OR ( _ wt decrease ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("k nn decrease") OR ((("10 a decrease") OR ((("5 wt decrease") OR ("_ wt decrease"))))))*.