@ Игорь Афанасьев
The first item should be a match of the full term(s) followed by partial word matches of each word entered. I’ve done some searches on your site and the results do appear to be odd.
What is the exact shortcode you are using?
Can you share screenshots of the Connections : Settings Search page? Please do not use http://joxi.ru/ as I can not see the screenshots, only brken/missing image where the screenshot should be.
You can attach your screenshots in you reply by click the Choose File button. YOu can attached up to three images.