Exactly, you should know, what are you looking for. As same as in Google search, you should precisely type the keywords in the 'Search' field in upper right corner in menu bar. You can search for (more than one) keywords, but not for combinations of numbers.
You will receive a list of posts, which may help you then.
So, welcome on board...
-Linuxfluesterer (I love KDE ...)
I really hope, that by the Brexit (poor Britain), TTIP will be finally prevented. But don't get tired to talk to your local politician to open eyes for danger to democracy because of TTIP