Blog Search Option

I was wondering if you can help me. The blogger search box above doesn’t seem to be searching through my blog anymore. It comes up blank most of the time and I don’t know why. With over 1,000 posts now, I need a good search option. Without it, people can find my posts on topics and I get many emails a day asking me if I have reviewed this or that case.

Does anyone know of a good widget we can use? While blogger has one, it is for their new template and I am currently using their old, so it won’t work for me.

Just thought I would ask for help. Thanks in advance!