duravapam
duravāpām — very difficult to obtain; SB 1.15.47-48
duravāpam — very difficult to achieve; SB 3.4.11
duravāpam — difficult to achieve; SB 4.8.21
duravāpam — very difficult to understand (without the mercy of a devotee); SB 7.6.27
duravāpam — very difficult to achieve; SB 10.44.39