To express lack you'd add 'for', or make it into a negative statement:

Det er for få hus i bygda.
There are too few houses in the village.

Det er ikke nok hus i bygda.
There aren't enough houses in the village.

To say 'a few', we use 'noen få':

Det er noen få hus i bygda.
There are a few houses in the village

I think that would depend on context, I'd just think of 'få' as there being a small number of them, not that there should be more.

'a few' could probably translate to 'et par' (a couple).