Perhaps you should try some spelling variations:
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
social objects » social subjects (Expand search), social objectives (Expand search), social projects (Expand search)
decree social » degree social (Expand search), three social (Expand search), free social (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
their decree » their degree (Expand search), the decree (Expand search), their discrete (Expand search)
decrease at » decrease akt (Expand search), decrease in (Expand search), decrease of (Expand search)
at decrease » rate decrease (Expand search), that decrease (Expand search), not 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 AND decrease at decrease ) OR ( decrease their decree social objects ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease and decrease at decrease ) OR ( decrease their decree social objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease and decrease at decrease ) OR ( decrease their decree social objects ))*.