Perhaps you should try some spelling variations:
improve processes » improve process (Expand search), improving processes (Expand search), improvement processes (Expand search)
decrease improve » decrease income (Expand search), decrease pro (Expand search), decrease sucrose (Expand search)
methods python » methods action (Expand search), pythons python (Expand search), methods method (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease NOT decrease improve processes ) OR ( python AND methods python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not decrease improve processes ) OR ( python AND methods python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not decrease improve processes ) OR ( python AND methods python programming ))*.