Perhaps you should try some spelling variations:
depressive disorders » depressive disorder
depression disorder » depressive disorder, deposition disorders
mail's depressive » mail's impressive, mild depressive, manisch depressive
suizid depression » suicide depression, suiside depression, suizid depressiver

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: (( mail's depressive disorders ) OR ( suizid depression disorder )).
• Adding a wildcard symbol may retrieve word variants: (( mail's depressive disorders ) or ( suizid depression disorder ))*.