What is the best way to refactor an if else branch

I have an if-else branching like

if(name.contains(substring)){
    if(name.contains(substring1)){
        return "this";
    }else if(name.contains(substring2)){
        return "that";
    }
    ...
}else if(){
     // if else ladder
}
....//else if ladder continues
else{
    return "them"
}

What is the best way to refactor this? That what is the most efficient way to make logic like this?