Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, thi hien
cua nhung » va nhung
anh mang » hanh mang, anh bang, anh nang
anh dang » anh dong, anh dung, anh bang
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: ((thi chieu) or (theo chieu)) xanh - ((anh mang) OR (anh dang)) cua nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (theo chieu)) xanh - ((anh mang) OR (anh dang)) cua nhung cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi chieu) or (theo chieu)) xanh - ((anh mang) OR (anh dang)) cua nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (theo chieu)) xanh - ((anh mang) OR (anh dang)) cua nhung cong tac toan cau*.