Perhaps you should try some spelling variations:
increase placing » increase planning (Expand search), increase plant (Expand search), increase living (Expand search)
placing objects » teaching objects (Expand search), speaking objects (Expand search), flying objects (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)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not increase » and increase (Expand search), an 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 AND decrease AND decrease ) OR ( decrease NOT increase placing objects ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease AND decrease and decrease ) OR ( decrease not increase placing objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease AND decrease and decrease ) OR ( decrease not increase placing objects ))*.