Perhaps you should try some spelling variations:
publicaciones internacional » publicacion internacional, obligaciones internacionales, publica internacional
economicos internacionales » economicas internacionales, economia internacional
mexico publicaciones » publica publicaciones, quimica publicaciones
tecnico economicos » tecnicos economicos, tecnico economico, tecnico economica

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( mexico publicaciones internacional. ) or ( tecnico economicos internacionales. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( mexico publicaciones internacional. ) OR ( tecnico economicos internacionales. )).
• Adding a wildcard symbol may retrieve word variants: (( mexico publicaciones internacional. ) or ( tecnico economicos internacionales. ))*.