this entry had only the kanji as it's primary Japanese database entry which is why you couldn't find it with a hiragana search. There is a hiragana database field which wasn't being included in the search. I have now included it and your search will work from now on. Thanks for pointing out the issue.
Why is it when I search for すえに, I cannot find this entry? I had to romanize it, which, to be frank, shouldn't be necessary.
Noun + の 末に 成長の末に - after the growth Verb-た 末に 勉強した末に - after studying