Package 06.Hb.25: Construction Of Items Repairing Foundation Embankments, Drainage Ditches, And Eroded And Damaged Foundation Surface Vt 22; Repair Of Foundation Embankment, Drainage Ditch, Damaged Foundation Surface Of Vt 62 Line 271 Thanh Son Hydropower Plant (A9.33) - 271 Nho Quan (T500Nq)