emacs24 - Use search script froma previous search emacs -

I'm an emacs newbie I use C-S "text" for the text I have an entry Instead of searching for it instead of writing it, how do I choose it? For example, there is a shortcut to remember the C-S "Text1" C-S "Text2" lesson 1, so when I search for it, I do not have to write it again?

If you press CS CS , then whatever you search for Will search last time. By using

MP you can run in search history and edit search strings as well. Press RET to continue the search.