Two positions in the top 10

[hoangvu]

Hello!

I have a longtail keyword I'm working on where I got my domain ranked at 6th place and any page on this domain ranked at 4th position in Google results. This is the underside which I want to focus on and I suspect that it is not good to have gotten my positions, in two places. The best would be well if everything was directed towards the side?

I'm thinking now about how I should proceed to try to get Google to understand that it's the bottom that will rank high for that keyword. Both on-and-off-page tips are appreciated.

Regards