Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
quang cua » quan cua, quang tuan, quang huy
cua nhung » va nhung
ho chieu » hoc thieu, doi chieu, mot chieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan tap » toan ban

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)) sang - nhanh quang cua nhung ((cong dan) OR (cong san)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sang - nhanh quang cua nhung ((cong dan) or (cong san)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sang - nhanh quang cua nhung ((cong dan) or (cong san)) toan tap*.