Perhaps you should try some spelling variations:
decrease nitrogen » decreases nitrogen (Expand search), increase nitrogen (Expand search), increased nitrogen (Expand search)
nitrogen losses » nitrogen doses (Expand search)
decrease flow » decreases flow (Expand search), decrease low (Expand search), decrease food (Expand search)
flow decrease » flow increase (Expand search), to decrease (Expand search), not decrease (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt decrease » and decrease (Expand search), not decrease (Expand search), any decrease (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to decrease (Expand search), and 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: "(( decrease akt decrease the decrease ) OR ( decrease flow decrease nitrogen losses ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease akt decrease the decrease ) OR ( decrease flow decrease nitrogen losses ))*.