Reducing the number of vacancies in the search. (Frontend development)

[ilonikso]

Since December 1, the number of vacancies that appear in the tape has sharply decreased.

I work in the field of website development, and before there were different proposals: PDS to HTML, Wordpress, other CMS web applications.
I did not change my search, but since the new week the number of vacancies has sharply decreased and only jobs in the name of which there is the word "HTML" are shown to me in the search "My Feed".

What could be the reason?
How to return the search?

Thank you for your time, I really need your help(