Perhaps you should try some spelling variations:
decreased functional » increased functional (Expand search), increase functional (Expand search), based functional (Expand search)
functional decrease » functional decline (Expand search), functional cereal (Expand search), functional areas (Expand search)
and decreased » and decreases (Expand search), and increased (Expand search)
decrease belt » decrease cell (Expand search), decrease akt (Expand search), decrease at (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (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)
objects » object (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 decreased functional decrease ) OR ( decrease NOT decrease belt objects ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease and decreased functional decrease ) OR ( decrease not decrease belt objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease and decreased functional decrease ) OR ( decrease not decrease belt objects ))*.