We've seen a number of reports, in the recent past, in Blogger Help Forum: Something Is Broken, about inability to search Blogger blogs.
The direct blog search offers few options, such as the ability to offer contextual web searches, offered by the CSE search. Right now, though, it appears to be the only option available.
An Important Update
If you did not use a Blogger / Google account when you Followed this blog, years ago, you are probably not Following now . During the past...