Perhaps you should try some spelling variations:
campo saber » como saber, campo esther, campo javier
campo saban » campo urbano
medicion de » medicina de
caminos de » camino de
accion en » accion de
lao pau » la pau, las pau
y paul » y paula
de lao » de lazo, de lago, del lao

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: (( accion en ((campo saber) OR (campo saban)) y paul ; ) OR ( medicion de caminos de lao pau ; ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( accion en ((campo saber) OR (campo saban)) y paul ; ) or ( medicion de caminos de lao pau ; ))~".
• Adding a wildcard symbol may retrieve word variants: (( accion en ((campo saber) OR (campo saban)) y paul ; ) or ( medicion de caminos de lao pau ; ))*.