Judges 1:28-30
1:28 Whenever Israel was strong militarily, they forced the Canaanites to do hard labor, but they never totally conquered them.
1:29 The men of Ephraim did not conquer the Canaanites living in Gezer. The Canaanites lived among them in Gezer.
1:30 The men of Zebulun did not conquer the people living in Kitron and Nahalol. The Canaanites lived among them and were forced to do hard labor.