Edit in JSFiddle

var myRouter = new Backbone.Router();

Backbone.history.start();

myRouter.route(/(help|support|answers|qa)/,'help',function(){
    console.log('The url hash just change to /#help');
});

//change url hash to "#help"
window.location.hash = 'help';
//change url hash to "#qa"
setTimeout(function(){window.location.hash = 'qa';},2000);
//hange url hash to "#support"
setTimeout(function(){window.location.hash = 'support';},4000);