Perhaps you should try some spelling variations:
decrease focal » decreases local (Expand search), decrease fetal (Expand search), decrease total (Expand search)
decrease with » decreases with (Expand search), increase with (Expand search), decrease in (Expand search)
with decrease » with decreased (Expand search), with deceased (Expand search), with increase (Expand search)
focal objects » social objects (Expand search), local object (Expand search), real objects (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)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » and decrease (Expand search), can increase (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 with decrease NOT decrease ) OR ( decrease can decrease focal objects ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease with decrease not decrease ) OR ( decrease can decrease focal objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease with decrease not decrease ) OR ( decrease can decrease focal objects ))*.