Hello,
1) First of all, go to Theme options > Header builder > edit Search element and translate it there http://prntscr.com/q2ub5x
2) Go to Theme options > Header builder > edit All departments element and translate it there http://prntscr.com/q2u8xx
3) To translate these texts to other languages use String translator http://prntscr.com/q2uwak
Regards
