Perhaps you should try some spelling variations:
trai nghiep » trai nghiem, trac nghiem, mai nghiep
nghiep nang » nghiep bang, nghiep nong, nghiep hang
thi nghiem » thuc nghiem
khach trai » khac trai, khanh tra, kham trai
nghiem mo » nghiem mon, nghiem moi, nghiem ma
cua khach » cua thanh, nha khach
sach thi » sach thu, sach tai, sach thieu
nang hoc » nang doc, nang luc, dong hoc
tu sach » thu sach, su sach, te sach
mo hoc » mon hoc, co 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 thi nghiem mo hoc ) or ( cua khach trai nghiep nang hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thi nghiem mo hoc ) OR ( cua khach trai nghiep nang hoc )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach thi nghiem mo hoc ) or ( cua khach trai nghiep nang hoc ))*.