Show similar ideas by keywords while typing a new idea

Use case: using the integrated idea portal in our product our new customers often do not search for similar ideas before submitting a new one, which creates a lot of duplications and lost of votes.

It would be very helpful if the "submit an idea" function would automatically show a search list of similar ideas based on keywords while a user is typing the name of a new idea. With that people can easier spot/realise that similar ideas already exist and they can just vote and/or comment under the existing idea instead of creating a new one.