Perhaps you should try some spelling variations:
constituciones peruanas » constitucionales peruanos (Expand Search), constituciones africanas (Expand Search), constitucional peruano (Expand Search)
constitucional peruana » constitucional peruano (Expand Search), constitucional espana (Expand Search), constitucional peru (Expand Search)
constitucion peruana » constitucional peruano (Expand Search), constitucion mexicana (Expand Search), constitucion para (Expand Search)
de 1979 » de 1978 (Expand Search), de 1999 (Expand Search)
y 1993 » _ 1993 (Expand Search), y 1990 (Expand Search)

Try widening your search to All Fields.

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

• Removing quotes may allow a broader search: ((((constituciones peruanas) OR (constitucion peruana))) OR (constitucional peruana)) de 1979 y 1993.