"concentrate better on" is correct and usable in written English.
You can use this phrase when emphasizing the need for someone to focus more on something. For example: "You need to concentrate better on studying for the exam if you want to get a good grade."
"I can concentrate better on sound when I'm not using up my brain space with sight," she said with a laugh.
Under the direction of Leo J. Hindery Jr., the chief executive who recently joined the company, Global Crossing could also be trying to concentrate better on the niche of providing international data and voice services over its worldwide network.
Dan Brown, it has emerged, occasionally dons a pair of gravity boots and hangs upside down from a special frame to help him relax and concentrate better on his writing.
It's naive and immense at the same time, and it's not going to help you concentrate better on your coursework.
Try to choose an ideal environment to concentrate better on the stuff.
You won't get distracted and shoot off in another direction, but concentrate better on the job in hand.
People come to mindfulness, meditation, whatever we want to call it, with the notion that this is another tool they can use to improve their lives, to get well, concentrate better, and so on.
The deal will allow them to concentrate on better targeting, better interaction and cross-screen experiences, and getting mobile to work in a cookie-free environment.
"Until we see gains in productivity, people are unlikely to feel the benefit in their pay packets so businesses need to concentrate on better people management and better working practices to shift the dial on this," Cotton said.
It results in you concentrating far better on technique.
Investors would prefer Mr Li to keep on reducing debt and to concentrate on better operational management.
