Please take a minute to use the search tool and look for things before you create entire new threads since, as other zoochatters have noted, there have been way too many duplicate threads lately.
As has been pointed out, it's not hard to avoid this mistake. That's what the search function is there for.
Checking via the ZC search is typically more helpful in determining whether a thread/topic exists already. Google can be helpful in dredging up additional information, but you do have to be more cautious of misinformation.
Use google to search zc I tend to not find what I'm looking for if I use the zc search, but google includes synonyms and things so I usually find stuff that way.
The ZC search can be fickle, I agree. I've found a few ways to target searches better via some trial and error.