Perhaps you should try some spelling variations:
campo perez » campos perez, camilo perez, crespo perez
campo deber » como deber
edicion de » medicion de
campo der » campo de, campo del, campos del
edicion e » edicion en, medicion e, edicion y
juan paul » juan paulo, jean paul, juan raul
el pago » el paso, el pacto, el parto
e campo » el campo, de campo, en campo

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

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