What is YogaSearch?

The Malwarebytes research team has determined that YogaSearch is a browser hijacker. These so-called “hijackers” manipulate your browser(s), for example to change your startpage or searchscopes, so that the affected browser visits their site or one of their choice.
This one hijacks your search results.

https://forums.malwarebytes.com/topic/210111-removal-instructions-for-yogasearch/