Hi Le,
You can use the autocomplete widget to display more than one attribute in a reference selector.
https://appstore.home.mendix.com/link/app/2695/AuraQ-Limited/AutoComplete-widget
Edit: I think you want the caption on one of your buttons to be a concatenated string? You can do that with parameters in your caption. In the screenshot below I created two parameters from attributes of the same object that my dataview is displaying. Parameters can be attributes of the current object or attributes of an associated entity.