Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh dung » thanh dung, anh dung, hanh dong
cong bang » cuong bang, dong bang, cong lang
hong bang » dong bang, hang ban, hong hanh
ho chieu » hoc thieu, doi chieu, mot chieu
dung cua » dung luan, dung cho
than cao » toan cao, thai cao, than cap

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 (ho chieu)) xanh - hanh dung cua cong ((cong bang) OR (hong bang)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) xanh - hanh dung cua cong ((cong bang) or (hong bang)) than cao~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) xanh - hanh dung cua cong ((cong bang) or (hong bang)) than cao*.