"Search Multi Tabs" cannot be used as a replacement... actually "Search Multi Tabs" cannot search only in the current tab, it has to search through all tabs... I have more than 200 tabs opened in my session... Imagine it.
What I really search for is an extension which shows all occurrences of the search in a graphical way on the left of the page, like FindBar Tweak could do. This allows to quickly see where are located the occurrences in the web page.