Perhaps you should try some spelling variations:
condicion de » condiciones de
medicion de » medicina de
de campos » de campo, de caminos, de cambios
luisa de » luis de, luis del
fe peru » de peru, del peru, use peru
loa pau » la pau
de loa » de loja, de los, de log

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: (( medicion de fe peru ((luisa f) OR (luisa de)) ; ) OR ( condicion de campos de loa pau ; ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( medicion de fe peru ((luisa f) OR (luisa de)) ; ) or ( condicion de campos de loa pau ; ))~".
• Adding a wildcard symbol may retrieve word variants: (( medicion de fe peru ((luisa f) OR (luisa de)) ; ) or ( condicion de campos de loa pau ; ))*.