As annoying as it is to have hit the woodwork so many times we have to say that bad finishing has a lot to do with it as well. Saurez attempts yesterday for example, the second attempt was pure class and unlucky to not go in off the post, but the first effort was a poor finish, he did the hard work to get the chance and then wasted it.!
We need a quality finisher up front who will take the majority of chances created, not easy to find them of course but they are about and not always expensive (unfortunately Hernandez up the road proves that!)