Perhaps you should try some spelling variations:
decrease learning » increases learning (Expand search), decreases weaning (Expand search), defense learning (Expand search)
increased lipid » increases lipid (Expand search)
learning object » learning objects (Expand search)
lipid decrease » rapid decrease (Expand search), ligand decrease (Expand search), limb decrease (Expand search)
not increased » not increase (Expand search), of increased (Expand search), to increased (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), not decrease (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (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 NOT increased lipid decrease ) OR ( decrease that decrease learning object ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not increased lipid decrease ) OR ( decrease that decrease learning object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not increased lipid decrease ) OR ( decrease that decrease learning object ))*.