Keywords are:  'spellgroup thief stealth skillgroup'
Thief stealth skills:
 searching                                  4 thi
   sneak                                    5 thi
   hide                                    11 thi
     stealthy movement                     22 thi
       scout                               26 thi
     distract                              17 thi
These skills deal with hiding, searching, stealthy movement and
concealment.