As we all know, to get rank high in Google search is not an easy task.
You have to get lots of quality back link. You need to know about SEO and its many related stuff.
In the meantime, here is a simple, quick and effective way to get more search traffic quickly from your old posts.
Firstly, go to your Google Analytics, find out which blog posts are CURRENTLY getting search traffic.
Link these popular posts to 3 to 4 other blog posts that are already on your blog.
So when your readers come to read those popular posts, the is a good chance, they will click on the links on those particular posts.
As an example, if I want to get my readers to stick around on this blog, I would link some of my other blog posts to those posts listed under "Worth Checking Out" blog posts (as seen on the right hand of this page).
This simple trick can drive search traffic to your other blog posts right away.