Perhaps you should try some spelling variations:
costs decreased » cross decreased (Expand search), causes decreased (Expand search), not decreased (Expand search)
base processing » based processing (Expand search), waste processing (Expand search), laser processing (Expand search)
decrease costs » decreasing costs (Expand search), decreases post (Expand search), disease costs (Expand search)
decreased base » decreased bone (Expand search), decreased brain (Expand search), decreased risk (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » can increase (Expand search), and decrease (Expand search), to decrease (Expand search)
decrease il » decreased il (Expand search), decrease in (Expand search), decrease hiv (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (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 decreased base processing ) OR ( decrease can decrease il decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease costs decreased base processing ) OR ( decrease can decrease il decrease ))*.