Perhaps you should try some spelling variations:
decrease further » increase further (Expand search), disease further (Expand search), decrease the (Expand search)
further decrease » further increase (Expand search), faster decrease (Expand search), the decrease (Expand search)
decrease flying » decrease flooding (Expand search), decrease walking (Expand search), decrease during (Expand search)
flying objects » moving objects (Expand search), flying insects (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 to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 further decrease akt decrease ) OR ( decrease to decrease flying objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease further decrease akt decrease ) OR ( decrease to decrease flying objects ))*.