Perhaps you should try some spelling variations:
decrease shadowing » decrease owing (Expand search), decrease following (Expand search), decreases shedding (Expand search)
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
increase decrease » increase disease (Expand search), increase degree (Expand search), increase breast (Expand search)
shadowing effect » shadowing effects (Expand search), shading effect (Expand search), shading effects (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not increase » and increase (Expand search), an increase (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)

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 increase decrease processes ) OR ( decrease can decrease shadowing effect ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not increase decrease processes ) OR ( decrease can decrease shadowing effect ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not increase decrease processes ) OR ( decrease can decrease shadowing effect ))*.