Perhaps you should try some spelling variations:
decrease sowing » decrease owing (Expand search), decrease lodging (Expand search), increased sowing (Expand search)
sowing direct » foreing direct (Expand search), using direct (Expand search), during direct (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease the (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
decrease akt » decrease at (Expand search), decrease after (Expand search), decrease with (Expand search)
akt decrease » not decrease (Expand search), any decrease (Expand search), salt decreases (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease AND decrease of decrease ) OR ( decrease akt decrease sowing direct ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease and decrease of decrease ) OR ( decrease akt decrease sowing direct ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease and decrease of decrease ) OR ( decrease akt decrease sowing direct ))*.