Perhaps you should try some spelling variations:
depressed burden » depression burden (Expand search), depressed brain (Expand search), depressed women (Expand search)
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
burden decrease » burden disease (Expand search), urea decrease (Expand search), burgers decreases (Expand search)
at processing » meat processing (Expand search), heat processing (Expand search), wet processing (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (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 AND decrease at processing ) OR ( decrease during depressed burden decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease AND decrease at processing ) OR ( decrease during depressed burden decrease ))*.