When Google in The Blogger Navbar can be used?

It's been about two or three months since I had created weblogs.
Google in the Blogger Navbar doesn't return any search results for my blogs.

Yahoo! search returns search results fine, and MSN search also returns search results though few pages is indexed yet.

I can't wait Google indexes my blogs, then I set up MSN search on my other blogs. This blog doesn't need search function yet, though.

Yahoo! search and MSN search is better than Google search recently?