Nebula and galaxies using 70mm scope Telescope: Orion 09843 SpaceProbe 3,3 inch aperture(76mm), 700mm focal length, eyepieces - 25mm and 10mm focal lengths. Please tell me whether it is possible  to see nebula and  galaxies.
You can see some of them with a naked eye. Many of the Messier objects, including galaxies and nebulae are observable even without any telescopes. As for others, if Charles Messier could catalog them in 1771 with a 4 inch refractor, you should see most using your 3.3 inch reflector too given good observation conditions, knowing where to point and using a properly collimated and otherwise maintained telescope.

Messier was from the Northern hemisphere and you seem to be closer to the equator judging by information you provide in your profile, so you shouldn't have problems seeing these objects either, and there are equally interesting objects also in the Southern skies that you could observe. Some of the easiest recognizable on the Northern skies are the Andromeda galaxy, or Messier 31, and the Orion Nebula, or Messier 42. You should also be able to discern quite a lot of detail of other astronomical bodies, including e.g. Pleiades, or Messier 45 which is also visible to the naked eye and many astronomers use to determine observational conditions and their visual acuity by.