The question was: How do you get this same type of information for lower searched terms?
My way of choice is to use the Google Adwords keyword tool which can be accessed through Adwords or externally (the external version requires you type in a code each time).
Let's look at the example from the previous post "satellite navigation". If you type this term into the tool and sort by "Exact Match" and then by "Average Search Volume" you will get something that looks like this:

Not real numbers, but you can quickly size up which terms are searched more ofen. Notice that based on the 1 term you input, it gives you lots of similiar terms that you might have not thought of (note that the screenshot cuts off most of the results).
You can also change the view to show you trending data month to month. This is nice if you want to know if certain products or services might sell better during certain times of the year:

Hope this helps answer the questions. There are plenty of tools out there that try to give you hard numbers and Iv'e mentioned some of them in previous posts (Keyword Discovery, WordTracker, etc...) but I have found that these tools tend to be just best guesses and are often pretty far off target.






