Perhaps you should try some spelling variations:
aggressive disorders » depressive disorders, recessive disorders, aggressive diseases
mail's depressive » mail's impressive, mild depressive, manisch depressive
non aggressive » non aggression, non progressive, more 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 disorders )).
• Adding a wildcard symbol may retrieve word variants: (( mail's depressive disorder ) or ( non aggressive disorders ))*.