Why are some keywords missing in Yandex?

Question

Search Engine Optimization

Good day, I’ve been racking my brains for several weeks now and can’t find the information I need, I really hope that I can help me here, thanks in advance!
The fact is that there are keywords on the page, but they are not in Yandex search. The words are used in the title H1, H3 and in the text itself, the text on the site is unique, the site is half a year old, the site is not under a filter, there is no spam either. I use tails to
the very words that are not in the search, but there are tails in the search. What could be wrong?

Answer 1

reoptimization
if and in quotes not

Answer 2

Well, it’s obvious that they added it recently and you need to order reindexing