Bokbinding or Bookbinding: How To spell?
The word Bokbinding is misspelled against Bookbinding, a noun meaning "The art, process, or business of binding books."
Bookbinding has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings b & kbinding which should not be misspelled with single 'O'
Wrong Spelling:  b-o-kbinding  Correct Spelling:  b-oo-kbinding 
Find more incorrect spellings of Bookbinding to spell right way.