Sorry I am having difficulty understanding what you are asking.

Is it only the addons page you have a problem with ?

What sort of things have changed ? What do you mean by

All I get is firefox extensions

A screenshot may help

• How do I create a screenshot of my problem?

Have you updated from a very old Firefox from some years ago to the current one ? Or have you just upgraded from Firefox 38 to Fireox 39 ?

Note Firefox tends to update every six weeks at the moment, but often you may not notice visual changes.

This is the screen Much different than the earlier version. I do not like this page. Did I download something incorrectly?

You are apparently looking at a web page from

• addons.mozilla.org
• https://addons.mozilla.org/firefox/search/?q=how+to+copy+a+screen&appver=any&platform=all

That page does have a search option on it, and yes; if you use that search you get results with matching addons or extensions. The ordinary address bar in Firefox will work as a searchbar.

• Search the web from the address bar
  • Customize the Firefox home screen

Firefox by default has a search bar adjacent to the address that lets you choose the search engine you use See:

• Use the Search bar in Firefox and manage search engines

That search bar allows you to control what the other searches use, or as a one off use an alternative search engine.

Firefox also has search bars on the newtab page and the home page.