Perhaps you should try some spelling variations:
increases learning » increases bleaching (Expand search), increasing learning (Expand search), increased weaning (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
during decrease » during increased (Expand search), during depressed (Expand search), during disease (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
risk decrease » risk decreases (Expand search), risk increase (Expand search), break decrease (Expand search)
by increases » by increased (Expand search), by increase (Expand search), but increases (Expand search)
decrease by » decreased by (Expand search), decrease in (Expand search), decrease of (Expand search)
objects » object (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease during decrease risk decrease ) OR ( decrease by increases learning objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during decrease risk decrease ) OR ( decrease by increases learning objects ))*.