Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu, ho chieu
cua nhung » va nhung
anh sang » lanh sang, anh dang, anh nang
anh bang » anh hoang, anh quang, tinh 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (mot chieu)) xanh - ((anh sang) OR (anh bang)) cua nhung cong tac toan cau~.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (mot chieu)) xanh - ((anh sang) or (anh bang)) cua nhung cong tac toan cau*.