Perhaps you should try some spelling variations:
xay nghiep » day nghiep, lam nghiep, xi nghiep
nghiep vu » nghiep va
sach dao » lanh dao
dao nghe » day nghe, da nghe, dat nghe
duoc hoc » quoc hoi
tu sach » thu sach, su sach, te sach
du hoc » tu hoc
vu hoc » tu hoc, va hoc, vi hoc
d hoc » ad hoc, de hoc, y hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach dao nghe ((d hoc) or (((du hoc) or (duoc hoc)))) ) or ( thu hoach xay nghiep vu hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach dao nghe ((d hoc) OR (((du hoc) OR (duoc hoc)))) ) OR ( thu hoach xay nghiep vu hoc )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach dao nghe ((d hoc) or (((du hoc) or (duoc hoc)))) ) or ( thu hoach xay nghiep vu hoc ))*.