Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, theo chieu
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
anh mang » hanh mang, anh bang, anh dang
mang cua » manh cua, dung cua, ban cua
tac toan » tap toan, hach toan, tich toan
tam toan » tap toan, tam than, pham toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (ho chieu)) xanh - anh mang cua nhung cong ((tac toan) OR (tam toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi chieu) or (ho chieu)) xanh - anh mang cua nhung cong ((tac toan) OR (tam toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (ho chieu)) xanh - anh mang cua nhung cong ((tac toan) OR (tam toan)) cau*.