Perhaps you should try some spelling variations:
nha nghiep » nha nghien, nghe nghiep, khao nghiep
thi nghiem » thuc nghiem
nghiep vu » nghiep va
sanh nha » sach nha, hanh nha, danh nhan
sach thi » sach thu, sach tai, sach thieu
so sanh » do sanh
tu sach » thu sach, su sach, te sach
vu hoc » tu hoc, va hoc, du hoc
vi hoc » li hoc, va hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sanh nha nghiep vu hoc ) or ( tu sach thi nghiem ((te hoc) or (vi hoc)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh nha nghiep vu hoc ) OR ( tu sach thi nghiem ((te hoc) OR (vi hoc)) )).
• Adding a wildcard symbol may retrieve word variants: (( so sanh nha nghiep vu hoc ) or ( tu sach thi nghiem ((te hoc) or (vi hoc)) ))*.