Perhaps you should try some spelling variations:
mediciones de » ediciones de, medicion de, ediciones del
campo escolar » tiempo escolar, marco escolar, grupo escolar
escolar a » escolar la, escolar y, escolar e
de campo » de cambio, el campo
lota paz » la paz, mora paz
campo y » campo de
y lota » y loa
a pau » la pau, a paul, a paz

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: (( mediciones de campo escolar a pau ; ) OR ( condiciones de campo y lota paz ; ))~.
• Adding a wildcard symbol may retrieve word variants: (( mediciones de campo escolar a pau ; ) or ( condiciones de campo y lota paz ; ))*.