First off you only have one hub and you only joined HP 1 month ago. In order to rank high with Google you need to do certain things to build your online presence.
~~Write more hubs
~~Your articles must be search friendly
~~Write low competition articles
~~Wait for your articles to age
Very rarely you will find that one hub makes it or that a new hub that is less than a month old gets lots of outside traffic. The minimum time to give your hubs is 6 months. If they take off before that then that is great. You need to build your subdomain so that Google will see that you are a serious writer and send you traffic.