Perhaps you should try some spelling variations:
medicion de » medicina de
campo del » campo de, campos de, campo en
de campo » de cambio, el campo
y cambio » el cambio, de cambio
raul roa » raul a, raul o
del loa » de loa, del la, del los
loa paz » la paz, mora paz
roa paz » rojas paz, mora paz

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 del loa paz ; ) or ( medicion ((y cambios) OR (y cambio)) raul roa paz ; ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( medicion de campo del loa paz ; ) OR ( medicion ((y cambios) OR (y cambio)) raul roa paz ; ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( medicion de campo del loa paz ; ) or ( medicion ((y cambios) OR (y cambio)) raul roa paz ; ))*".