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Google Search Engine can intentionally lead you astray, rather than help you find the information you need. Here are some tricks for using Google to still get what you seek. Google Search has recently been modified to maximize the owners' profit while sacrificing utility for the user. There are many other search engines available, and this Instructable is not intended to compare them to Google. This Instructable is about using Google and getting good results from it. To see my related Instructables, click on unclesam in the INFO box on the right of this page, then repeatedly click "NEXT" see them all.
Step 1Never Click on the Sponsored Links
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A Google search will have a short list of sponsored links at the top of the page of hits. These links appear solely because the owners of the sites have paid money to Google. They typically will have only a vague connection to the object of your search. Never click on any of them, they are a waste of your time.
In fact, all of the search results on the first two pages go directly to the URL that Google indicates they go to.
It is possible that there was a temporary problem, Google stopped this behavior, or your machine is infected with malware. My parents have encountered malware that exhibit this sort of behavior in the past.
When I've seen this one, it is a rootkit, which is able to hide itself from the usual antivirus programs. ComboFix is the program that removes it. Check Google to see where to download and how to use it. (You'll probably have a to use a different computer that doesn't have this malware already on it...)
The click-jacking thing you're seeing is almost certainly nothing to do with Google. My bet would be with @paperrhino and @tocsik and be on "malware" of some description.
The only time I've ever had a problem even similar to this it was due to a virus. I'm not saying that is whats going on in your case. I'm just saying that I've never had google redirect me to any site other than the one I was expecting after clicking the link.