Here is the code to import a search bar for your blog.  You will need to use the “HTML/Java Script” gadget in Blogger– not sure what the widget is in WordPress, but I’m sure there’s a way to do it.  Then, simply enter the following HTML code:
<p align=”left”>
<form id=”searchthis” action=”http://yourblogurlhere.blogspot.com/search <http://yourblogurlhere.blogspot.com/search> ” style=”display:inline;” method=”get”>
<input id=”b-query” [...]