Perhaps you should try some spelling variations:
decrease costs » decreasing costs (Expand search), decreases post (Expand search), disease costs (Expand search)
costs decrease » loss decrease (Expand search), not decrease (Expand search), cells decrease (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their projects » the projects (Expand search), their products (Expand search), thematic projects (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)

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 costs decrease AND decrease ) OR ( decrease akt decrease their projects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease costs decrease AND decrease ) OR ( decrease akt decrease their projects ))*.