Perhaps you should try some spelling variations:
tuan nhung » quan nhung, tuan hung, thuat nhung
hieu cach » hieu cac, chieu sach, hieu ca
hanh tran » hanh trang, thanh tran, hanh tram
tran tuan » tran xuan, tran quang, tran thanh
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu cach - hanh tran tuan nhung ((cong tan) OR (cong tac)) van ban~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - hanh tran tuan nhung ((cong tan) OR (cong tac)) van ban*.