Perhaps you should try some spelling variations:
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
decrease owing » decrease lodging (Expand search), decrease during (Expand search), decrease in (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)
owing object » moving object (Expand search), using object (Expand search), moving objects (Expand search)
decrease l » decrease il (Expand search), decrease _ (Expand search), decrease β (Expand search)
l decrease » _ decrease (Expand search), α decrease (Expand search), to 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 their decrease akt decrease ) OR ( decrease l decrease owing object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease their decrease akt decrease ) OR ( decrease l decrease owing object ))*.