You have to show Google that your website is relevant

If you want to get high rankings for the keyword “custom bikes” then it is no longer enough to have that keyword on your web page. There are several things that you can do to improve the position of your page:
A single page should be as closely related to a single aspect of the keyword as possible. The more targeted your page is to that aspect, the more likely it is that it will be chosen for the results.
To make your website relevant to a topic, it helps if you have multiple pages that deal with different aspects of the topic. For example, one page on your site could be about the definition of custom bikes, other pages could be about custom bike parts, other about low-rider custom bikes, etc.
Use different words that describe the topic of your site. Use “bikes”, “bicycles”, “motorcycles”, “custom choppers”, etc. depending on what your website is about.
It’s not enough that your web page is relevant to a keyword. It must also be relevant to a topic.
From the newsletter Axandra Search Engine Facts