You're searching for Act, whereas before it is passed and received
royal assent, it is not an Act, but a Bill (and won't have a year
either). Searching for Childcare Payments Bill returns more results;
some won't be that relevant, as that's just searching for things
containing all those words, unless you put the phrase you want in
quotes to produce a phrase search (search options are explained e.g.
on the right hand side of
http://www.theyworkforyou.com/search/ ).
Searching for "Childcare Payments Bill" (with quotes) gives me the
1st, 2nd, programme, and 3rd stage debates, plus some "Business of the
House" debates referring to the bill, all seem relevant.
To get the Public Bill Committee, there's only one per bill, so might
be easier to just locate
http://www.theyworkforyou.com/pbc/2014-15/Childcare_Payments_Bill/ but
a search with getHansard including section:pbc should find it (though
there does appear to be a bug with the "listurl" returned there, but
you can work it out easily enough).
> ordinarily would I not only
> expect to find debates in the commons or the house of lords for a bill such
> as the Childcare Payments Act?
Yes, the Parliament page you linked to above lists them all.
Hope that's helpful.
ATB,
Matthew