High search volume keywords

[sbook]

The problem is that our index is not in serps anymore with the high volume keywords [international manufacturers' brand names]. We still keep these keywords in title, but it brings not much results.

We made page www.example.com/brandname, added there products with unique descriptions.
Product pages started to drive visitors, but not the www.example.com/brandname page.

If we add a blog to the top of this page and add unique posts about the brand's company news, would it help? In this case this page would be unique, refreshed with new info, and have rotating products.

Maybe some other suggestions?

[edited by: tedster at 10:52 am (utc) on Sep 20, 2012]
[edit reason] removed specific brand names [/edit]

[Sgt_Kickaxe]

I wouldn't add brand news on product pages unless its directly related to that specific product. Your site sounds like it is primarily a shopping site so I would focus on tools and features that help the visitor decide if the item is right for them. Ratings given by your visitors, original reviews written specifically for your site and price comparison options are proven ways to help visitors.

[sunnyujjawal]

I avoid Google keyword tool and instead of it i prefer "Searches related to Kewyord" provided at the bottom of search page.
Here G suggests us the current trending keywords, which bring good traffic to my site.

[tedster]

I know one website that tried to target ALL the related phrases. They were smacked with about a 50 position penalty. So I would caution about that practice - but certainly targeting a few of the very relevant ones for your site can be a good way to get a toehold on very competitive SERPs.

And when it comes to brainstorming longer tail phrases, don't forget to check the search suggestions that show up in the drop-down as you type in a query.