"Little wonder" means that something is not surprising or unexpected because it makes complete sense or is obvious given the circumstances. Full definition
There can be little wonder then as to why I am a firm believer that the relationships you develop in your life are the building blocks to your career. (nreionline.com)
It's of little wonder why this is a BIG hit for people who're always on the rush and are on a hectic schedule. (afreedating.com)
With all the places to spend money in preparation for the arrival of the baby, it is little wonder many women want to be able to purchase affordable maternity clothing. (pregnancy-info.net)