Mr. Gay (but not just "Gay" -- Internet Gay) is here to help you.
When I press Ctrl and F, it will show me a search bar down on my screen and I can find things on the website which I am watching in the moment. For example if I search "Post reply" it will highlight the one up there (in this concrete case): ☯☼☯☼☯ SEO - Search Engine Optimization - 论坛 (Forum) ☯☼☯☼☯Internet Internet Post reply ( Re: Keyboard shortcut - Ctrl + f ). I tried with another browser of my best friend (it is a Chinese one) and the result was the same, the difference was only that the find bar appears up there. I hope it will answer well the question about Ctrl + F (Ctrl and F).