However, the war was prolonged between the house of Saul and the house of David. David was becoming steadily stronger, while the house of Saul was becoming increasingly weaker.
Their descendants remained in the land (the Israelites were unable to wipe them out completely). Solomon conscripted them for his work crews, and they continue in that role to this very day.
The Ephraimites did not conquer the Canaanites living in Gezer. The Canaanites live among the Ephraimites to this very day and do hard labor as their servants.
The men of Naphtali did not conquer the people living in Beth Shemesh or Beth Anath. They live among the Canaanites residing in the land. The Canaanites living in Beth Shemesh and Beth Anath were forced to do hard labor for them.
The Amorites managed to remain in Har Heres, Aijalon, and Shaalbim. Whenever the tribe of Joseph was strong militarily, the Amorites were forced to do hard labor.