Why does the search on Habré not work for vacancies?

Question

Habr

Let's say I'm searching for "php" and the search box says "website search".

And in the results I see: 1000 topics | 14 blogs | 1000 users | 1000 communications | 1000 questions... and not a single vacancy, although I expected to find exactly them, because "Oh, work!" - an explicit part of the site.