Perhaps you should try some spelling variations:
campos perez » campo perez, campos perales, campos mendez
ediciones de » edicion de, condiciones de
edicion dle » edicion de, medicion de, adicion de
campus peru » campus per, corpus peru, campus poder
dle campo » de campo, el campo, del campo
un paz » en paz, un par
pan » plan

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 dle campo de un paz ; ) OR ( ediciones de ((campus peru) OR (campos perez)) el pan ; ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( edicion dle campo de un paz ; ) or ( ediciones de ((campus peru) OR (campos perez)) el pan ; ))~".
• Adding a wildcard symbol may retrieve word variants: (( edicion dle campo de un paz ; ) or ( ediciones de ((campus peru) OR (campos perez)) el pan ; ))*.