Perhaps you should try some spelling variations:
chieu hanh » chieu xanh, hien hanh, chi hanh
nhung cong » dung cong, thong cong, hang cong
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: theo ((chieu hanh) or (dieu hanh)) - ((hanh mang) or (anh tang)) cua nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu hanh) OR (dieu hanh)) - ((hanh mang) OR (anh tang)) cua nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu hanh) or (dieu hanh)) - ((hanh mang) or (anh tang)) cua nhung cong tac toan cau*.