Download the mozilla SEACH RESET add-on from here...

https://addons.mozilla.org/en-US/firefox/addon/searchreset/

go to your addons/plugins and check if you have some unknown ones (you wrote your question using chrome, so it is impossible to check ) Then check control panel for fresh unknown programs. Uninstall them After that reset search settings. You can also scan with adwcleaner.

thanks i remove all my addons now problem solve thanks

It is very sad  :-< but many of the software

down-loaders / installers will trick you into
installing not only their program, but other
programs as well. You have heard of the
fine print in shady contracts, right? Well,
some installers you need to look at the
teeny tiny fine print. You are thinking
you are giving the program permission
to install the program you want by using
the recommended option. But if you use
the manual option instead, you discover
all kinds of stuff that you do not even
know what it is or what it does. From
now on, everyone needs to use the
manual option to put a stop to this

Yes, all of the above clarifications were correct, but it wasn't obvious to me how to get rid of the SmartSearch bar from what I received of you message in the email. This might have been helpful if it were in the initial string, rather than a link. I got the answer in someone else's post.