Perhaps you should try some spelling variations:
medicion de » medicina de
del plazo » del plata, del paso
de campo » de cambio, el campo
lona pau » la pau
del plan » de plan, el plan
campo e » campo de, campo en, campo el
e lona » de lona
lecciones » acciones

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

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