Looking on the internet deeply has found these results:

but didn't find is the most popular phrase on the web.

but didn't find any. 1461,000 results on the web	but didn't find 11,600,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Unit responded but didn't find anything. But I didn't find any. sheriff, but I didn't find any. I spent all day on the road, but didn't find any food. But you didn't find any of them. HAZMAT team scoured the scene, but didn't find any incendiaries. Work that was fitting an ex	We've checked every room but didn't find anything. Frankie recanvassed the crime scene and the dorm but didn't find the phone itself. I spent all day on the road, but didn't find any food. I carried iron, but didn't find anything heavier than debt. A deep cave, but didn't find it. Unit responded but didn't find anything. They questioned my husband, but didn't find anything. HAZMAT team scoured the scene, but didn't find any incendiaries.

but didn't find any.

1461,000 results on the web

but didn't find

11,600,000 results on the web

More popular!

We've checked every room but didn't find anything.
Frankie recanvassed the crime scene and the dorm but didn't find the phone itself.
I spent all day on the road, but didn't find any food.
I carried iron, but didn't find anything heavier than debt.
A deep cave, but didn't find it.
Unit responded but didn't find anything.
They questioned my husband, but didn't find anything.
HAZMAT team scoured the scene, but didn't find any incendiaries.