Perhaps you should try some spelling variations:
disease decreases » diseases decreases (Expand search), disease increases (Expand search), distance decreases (Expand search)
decrease litter » increased litter (Expand search), decrease after (Expand search), decreases liver (Expand search)
litter sampling » cluster sampling (Expand search), matters sampling (Expand search), pattern sampling (Expand search)
decreases after » decrease after (Expand search), decreased after (Expand search), decreases water (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), _ decrease (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt disease » at disease (Expand search), rot disease (Expand search), not disease (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 the decrease litter sampling ) OR ( decrease akt disease decreases after ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease the decrease litter sampling ) OR ( decrease akt disease decreases after ))*.