Perhaps you should try some spelling variations:
thanh tung » thanh cong
hay nhung » tay nhung, tham nhung, thai nhung
vien anh » vien canh, viet anh, dien anh
dien dan » hien dai, vien dai, gian dan
tung hay » cung hay, tung bay, trung hai
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((vien anh) or (dien dan)) - thanh tung hay nhung ((cong dan) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien anh) OR (dien dan)) - thanh tung hay nhung ((cong dan) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((vien anh) or (dien dan)) - thanh tung hay nhung ((cong dan) or (cong tac)) toan cao*.