Perhaps you should try some spelling variations:
mail's depressive » mail's impressive, mild depressive, manisch depressive
non progressive » _ progressive, 5 progressive, 2 progressive
non aggressive » non aggression, more aggressive, _ aggressive

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 disorder ) OR ( ((non aggressive) OR (non progressive)) disorders )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mail's depressive disorder ) or ( ((non aggressive) OR (non progressive)) disorders ))".
• Adding a wildcard symbol may retrieve word variants: (( mail's depressive disorder ) or ( ((non aggressive) OR (non progressive)) disorders ))*.