Perhaps you should try some spelling variations:
decrease akt » decrease and (Expand search), decrease after (Expand search), decrease with (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or decrease (Expand search)
decrease by » decreased by (Expand search), decrease in (Expand search), decrease of (Expand search)
by decrease » by decreased (Expand search), may decrease (Expand search), any decrease (Expand search)
decrease at » decrease and (Expand search), decrease in (Expand search), decrease of (Expand search)
decrease en » decrease in (Expand search), decrease when (Expand search), decrease and (Expand search)
en object » an object (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: "(( decrease on decrease by decrease ) OR ( ((decrease at) OR (decrease akt)) decrease en object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease on decrease by decrease ) OR ( ((decrease at) OR (decrease akt)) decrease en object ))*.