Perhaps you should try some spelling variations:
dung cong » dung trong
tien manh » tien anh, tien thanh, tran manh
tinh ban » tinh bang, trinh ban, tinh bac
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien manh) or (tieng anh)) - tinh ban cua dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien manh) OR (tieng anh)) - tinh ban cua dung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) or (tieng anh)) - tinh ban cua dung cong tac toan cau*.