Perhaps you should try some spelling variations:
mediciones e » mediciones de, mediciones y, ediciones de
edicion e » edicion de, edicion en, medicion e
e campos » de campos, en campos, y campos
campos e » campos de, campos el, campos en
del pago » del lago, de pago, el pago
perez en » perez e, perez es, perez et
e del » de del, 5e del, y del

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( mediciones e campos e del pago ; ) or ( edicion e campos ((perez en) OR (perez el)) paul ; ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( mediciones e campos e del pago ; ) OR ( edicion e campos ((perez en) OR (perez el)) paul ; )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mediciones e campos e del pago ; ) or ( edicion e campos ((perez en) OR (perez el)) paul ; ))".
• Adding a wildcard symbol may retrieve word variants: (( mediciones e campos e del pago ; ) or ( edicion e campos ((perez en) OR (perez el)) paul ; ))*.