Can a girl with naga dosham can marry a girl without nagadosham?

Absolutely can. In my point of view there is nothing wrong if a boy with nagadhosha marry girl without nagadhosha. God created human for live happily with their choosen life. Of course there is bad and good in human life and we must struggled, faced and settled down whatever appeared problems. Problems are created by human itself. There is nothing to blame dhosha or God. People out there are you'll agree with me "There is pro and cons in life to help human live happily? If yes, why don't a boy/girl with or without ( positive + negative = positive life) dosha get marry? Try to think and see life in good and better way. There is lot of things /challenges out there to face as a human.