Translation:The children want to build a thing, but certainly not a building!
Yea, there are loads of examples of those constructions in the corpus of Esperanto.
Try searching respectively for:
\bvol\VF \EL+oj?n\b /
\bvol\VF,? ke\b /
\b means a word break,
\VF means verb ending,
\EL+ means one or more Esperanto letters, and
? means maybe the previous character (so
oj?n hits both ‘on’ and ‘ojn’). See also here.