28 When Israel became strong, they pressed the Canaanites into forced labor but never drove them out completely.

Read Judges 1:28 Using Other Translations

And it came to pass, when Israel was strong, that they put the Canaanites to tribute, and did not utterly drive them out.
When Israel grew strong, they put the Canaanites to forced labor, but did not drive them out completely.
When the Israelites grew stronger, they forced the Canaanites to work as slaves, but they never did drive them completely out of the land.