They don't own the van so it turns out (4-4)
I believe the answer is:
have-nots
'they don't own' is the definition.
The definition suggests an adverb but the answer is not.
'van so it turns out' is the wordplay.
'van' becomes 'haven' (I can't justify this - if you can you should give a lot more credence to this answer).
'it' becomes ''t' (abbreviation. e.g. in 'tis).
'turns out' is an anagram indicator.
'so'+'t'='sot'
'sot' with letters rearranged gives 'ots'.
'haven'+'ots'='HAVE-NOTS'
'the' is the link.
Can you help me to learn more?
(Another definition for have-nots that I've seen is " People who do not possess wealth or privilege".)