Perhaps you should try some spelling variations:
period programming » grid programming (Expand search), method programming (Expand search), end programming (Expand search)
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decreases disease (Expand search)
decrease implicit » decade implicit (Expand search), verdade implicit (Expand search)
implicit period » implicit method (Expand search), implicit operation (Expand search), implicit methods (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt decrease » not decrease (Expand search), any decrease (Expand search), salt decreases (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (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 akt decrease decrease processes ) OR ( AND decrease implicit period programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease akt decrease decrease processes ) OR ( and decrease implicit period programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease akt decrease decrease processes ) OR ( and decrease implicit period programming ))*.