Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
hanh dong » anh dong, ha dong
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
dong cua » dung cua, cong cua, huong cua
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than

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: ((doi chieu) OR (ho chieu)) xanh - hanh dong cua nhung cong ((van toan) OR (dan than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) xanh - hanh dong cua nhung cong ((van toan) or (dan than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) xanh - hanh dong cua nhung cong ((van toan) or (dan than)) cau*.