In addition to the CTRL/CMD + Enter shortcut mentioned in a sibling comment, you could also use your arrow keys to select a choice from your recent history.

I personally disagree with you that searching and moving a hand to the mouse or trackpad in order to click a result is faster than using only the keyboard and the appropriate shortcuts, bypassing a search engine.

This is a matter of understanding the features of your application and operating system. If you choose to only learn the features at the surface, that's your prerogative, but I don't think you can claim a particular strategy is faster or more efficient if you don't really grok the alternatives (I don't think you do judging by your various claims).

With your hacker news example, you would have to simply type news.y and if you visit frequently enough or have the site bookmarked, getting to the site should only be a matter of hitting down-arrow and then enter.