fast gmail like searches on roundcube

==== Required information ====
- iRedMail version (check /etc/iredmail-release):  0.9
- Linux/BSD distribution name and version:  centos 6
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====

hi,
trying to get fast searches on roundcube.
would like if it could work like gmail (using multiple keywords to perform search)
if not wrong, i think this is called fuzzy search(i do have dovecot_fts running)?
please advise if anyone has managed to get this?

thanks
kevin