There could be, but that's irrelevant to the point. Everything could be done by magic pixies, science woj't find it because it's just a method of investigation based on an assumption of naturalism. This isn't saying that is no such thing as the 'supernatural". You need a method that would allow that.
Supernatural.
(of a manifestation or event) attributed to some force beyond scientific understanding or the laws of nature.
Just because something is beyond scientific understanding now, doesn't mean it always will be.
The method we have now is just fine, we just need to tune it, and it's knowledge that does that.
Maybe we don't have the awareness or knowledge yet, the science of today will be outdated tomorrow.
As they find out more they are more capable of making discoveries.
It's true you can't find something that isn't there, but you can keep your eyes open and watch out for what is there.
Give it 200 years and we and our science will look quaint to those in the future.
That's because, short of something unfortunate happening to us, science evolves.
some of the theories they have now would have been laughed at, 100 years ago.