Perhaps you should try some spelling variations:
ediciones del » ediciones de, edicion del, condiciones del
edicion de » medicion de
caso peru » caso pedro, caso para, caso pet
del campo » el campo, de campo, del cambio
del loa » de loa, del los, del loco
del la » del lao, del las, del lago
a pau » la pau, a paul, a paz

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( edicion de caso peru a pau ; ) or ( ediciones del campo ((del la) OR (del loa)) pau ; ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( edicion de caso peru a pau ; ) OR ( ediciones del campo ((del la) OR (del loa)) pau ; )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( edicion de caso peru a pau ; ) or ( ediciones del campo ((del la) OR (del loa)) pau ; ))".
• Adding a wildcard symbol may retrieve word variants: (( edicion de caso peru a pau ; ) or ( ediciones del campo ((del la) OR (del loa)) pau ; ))*.