Perhaps you should try some spelling variations:
medicion de » medicina de
de campos » de caminos, de cambios
campos la » campos de
largo del » largo de
de campo » de cambio, el campo
base les » base las, base en, base del
la largo » lo largo, la larga, a largo

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

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