There was none of the Anakim left in the land of the children of Israel: only in Gaza, in Gath, and in Ashdod, did some remain.
Joshua subdued the whole land (Joshua 11:23) in the sense that there were no more pitched battles by the combined Israelite tribal forces following Joshua’s conquests. God expected individual tribes to subdue the remaining towns and pockets of resistance from then on (cf. Joshua 13:1; Judges 1:1).