Ask HN: Why is LinkedIn job search engine so AWFUL?

I just don't get how it's possible to fail that much without doing on it purpose.

For example I search for the term Vue.js, sorted by relevance. The first non-sponsored job offer is a PHP job, that don't mention the terms Vue, Vue.js or even JS.

How is that even possible?

Did linkedin decide that Vue.js is a synonym of PHP?