Does the "root" search give you what you are looking for?
(Root is also available as a section in BWS)
A few ways of doing this.
One would be through doing a Bible Word Study on αγαπη, and checking the root section. This is probably the easiest if you're not in an NT already, looking at the instance.
Another would be through searching a Greek New Testament or an NT with reverse interlinear (such as the LEB) for the root. I did this from a right-click on 'love' in the LEB at Mt 24.12.
