Perhaps you should try some spelling variations:
regulaciones internacionales » relaciones internacionales, legislaciones internacionales, negociaciones internacionales
regulacion internacionales » regulacion internacional, relaciones internacionales, legislaciones internacionales
mexico regulaciones » mexico relaciones, mexico reflexiones, mexico migraciones
mexico regulacion » mexico educacion, mexico revolucion, mexico evaluacion

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mexico regulaciones internacionales. ) OR ( mexico regulacion internacionales. ))~".
• Adding a wildcard symbol may retrieve word variants: (( mexico regulaciones internacionales. ) OR ( mexico regulacion internacionales. ))*.