The phrase "focus topic" refers to the main subject or idea that someone is concentrating on or giving their attention to. It is the particular theme or area that is being emphasized in a discussion or study. Full definition
As well, fewer and fewer new key texts are being published, in favour of smaller publications on more focused topics. (slaw.ca)
A number of schools are responding to this by introducing technology - focused topics in areas like cyber security or the law of robots, or by creating practical, skills - based modules. (ft.com)
The findings from the review are presented first as overall key findings, and then in more detail by focus topics. (californianstogether.org)