"We didn't find anything" is fine for a random journal (there is a saying in academia that everything gets published eventually), but that's not going to get yo

"We didn't find anything" is fine for a random journal (there is a saying in academia that everything gets published eventually), but that's not going to get you into Cell, Nature, or Science, or a similarly top-tier venue. That's where the stress lies, and why negative results are pointedly lacking in the literature.