If you're just starting out, focus on compound lifts roughly 3 times a week, rather than doing any sort of split routine. I was making barely any progress on a split and moved onto a more strength training routine and it's helped heaps.
Don't start out with compound lifts, technique is critical and if you don't know what you are doing you will injure yourself. I'm surprised you weren't making any gains on a split routine, were you using supersets?
As with anything you need to push yourself, if you are comfortably making your sets you wont get the gains.
Also avoid too many chest exercises, it is a great way to ruin your posture. A general rule of thumb is to do 2x the work on your back than you did on your front. And don't be like those guys I always see in photos at stereos. Leg day should be the most important day of the week!
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