Perhaps you should try some spelling variations:
nghien ban » nghiep ban, nghiep bang, phien ban
hoc nghien » hoc hien
nghiem ban » nghiem van, nghiem xuan, nghiep bang
hoc nghiem » thuc nghiem, hoc nghe, hoc nhiet
vung moc » dung moi, dung mot, sung mot
tac dung » sach dung, xay dung, tin dung
danh tac » danh bac, doanh tai, danh thuc
cong tac » cong ty
canh tac » canh tay, canh giac, anh ta
hoc viet » hoc hien
dung hoc » dong hoc, dung thuoc, trung hoc
vien nam » vien dai, van nam, hien nay
van hoc » van hoa
dung mo » dung co, dung cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( danh tac dung hoc viet nam ) or ((((( ((canh tac) OR (cong tac)) van hoc nghien ban ) or ( ((canh tac) OR (cong tac)) van hoc nghiem ban ))) or ( danh tac ((vung moc) or (dung mo)) vien nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( danh tac dung hoc viet nam ) OR ((((( ((canh tac) OR (cong tac)) van hoc nghien ban ) OR ( ((canh tac) OR (cong tac)) van hoc nghiem ban ))) OR ( danh tac ((vung moc) OR (dung mo)) vien nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( danh tac dung hoc viet nam ) or ((((( ((canh tac) OR (cong tac)) van hoc nghien ban ) or ( ((canh tac) OR (cong tac)) van hoc nghiem ban ))) or ( danh tac ((vung moc) or (dung mo)) vien nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( danh tac dung hoc viet nam ) or ((((( ((canh tac) OR (cong tac)) van hoc nghien ban ) or ( ((canh tac) OR (cong tac)) van hoc nghiem ban ))) or ( danh tac ((vung moc) or (dung mo)) vien nam ))))*.