Perhaps you should try some spelling variations:
nghiep vung » nghiep dung, nghiep hung, nghiep nhung
trach nhiem » trac nghiem
thuat sach » thuat lanh, thuat san
tai nghiep » mai nghiep, tac nghiep, trai nghiem
nhiem van » nghiem van, nhiem va, nghiem ban
sach tai » sach bai, sach tham, sach dao
vung moc » dung mo, dung moi, dung mot
van hoc » van hoa
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((thu hoach) or (thuat sach)) trach nhiem van hoc ) or ( te sach tai nghiep vung moc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((thu hoach) OR (thuat sach)) trach nhiem van hoc ) OR ( te sach tai nghiep vung moc )).
• Adding a wildcard symbol may retrieve word variants: (( ((thu hoach) or (thuat sach)) trach nhiem van hoc ) or ( te sach tai nghiep vung moc ))*.