Forest remain in relegation danger after their four points penalty for financial irregularities.
Nuno said of the support: "Very important. Very important. The demonstration was in the last game (in the win against Fulham). The noise that the City Ground made, and the help that they gave to the players, was so important for us.
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"We know that we are going to get this support away from home, so hopefully we can deliver again."
Forest meet Tottenham on Sunday
"It was a good reaction," Nuno said of securing points from the past two games. "They were two good games. Especially in this last one (against Fulham), I think we did things really well. But, we still have a long way to go and a lot of improvements to be made."