Perhaps you should try some spelling variations:
campus per » campus de
edicion y » edicion de
y campus » y campos, y camps, y camus
de credo » del credo, de crudo, de credito
du credo » del credo, du credit, el credo
pedro y » pedro a, pedro e, pedro c
per el » ser el, per al, per il

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: (( edicion y campus per el pan ; ) OR ( medicina ((de credo) OR (du credo)) pedro y paz ; ))~.
• Adding a wildcard symbol may retrieve word variants: (( edicion y campus per el pan ; ) or ( medicina ((de credo) or (du credo)) pedro y paz ; ))*.