Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
doc hieu » toc thieu, hoc thieu, hoc hien
cong cua » cong cu, dong cua, huong cua
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doc hieu)) xanh - thanh cong cua dung ((cong dan) OR (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doc hieu)) xanh - thanh cong cua dung ((cong dan) OR (cong tan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (doc hieu)) xanh - thanh cong cua dung ((cong dan) OR (cong tan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doc hieu)) xanh - thanh cong cua dung ((cong dan) OR (cong tan)) toan tap*.