"Try to understand it."

Translation: Snažte se to chápat.

[aososam]

proč "zkus to chápat" neni spravně?

[VladaFu]

It is now accepted.

[MilanVisnj]

Je "Snaž se to rozumět" spravně?

[BoneheadBass]

If rozumět can be used here, I believe you would need tomu (dative case).