The order would be more like: The issues that are relvant nowadays. Other terms that you could potentially use (depending on the context) if you are avoiding making a full sentence out of the idea: contemporary / socially relevant issues pressing / relevant issues in modern-day / contemporary society hot button topic(s) / issue(s) (for something controversial)

More common to say, Current, relevant issues. You need a comma between adjectives. However, if you want to use nowadays, then you can have a sentence, like: Nowadays the relevant issues are blah blah blah