Hi guys,Effectivly, it is 4 chars.mfelber well spotted, 1.9.3 was not affected by mysql conf, 1.9.4 was.So, after reading his link (thanks ! ), the problem has been solved by adding ft_min_word_len=3 in the area of the my.ini file of WampServer, and rebuild the ost__search table..So now, when I search for "dcu" in osticket, I get results :)Thanks !